Preparing to test Covid-19 isolation monitoring bracelet The first type is the Bluezone smart bracelet, manufactured by a Vietnamese enterprise. The expected price is 6 USD / unit, equivalent to about 138,000 VND. The bracelet uses Bluezone open source core, 30-day battery, and is used in cases where smartphones are not used like in factories, used for the elderly … to support monitoring, medical declaration… The second type is a GPS navigation bracelet to help manage in the isolation area, priced at 35 USD/piece (equivalent to 800,000 VND). This bracelet will identify the wearer’s location, have a warning to destroy or remove the bracelet; 30 days battery, can be charged repeatedly and reused. The bracelet has a warning sent to the quarantined person, the medical officer in charge when leaving the allowed range or violating the predetermined route. Previously, to comply with the request of the National Steering Committee for the Prevention and Control of the Covid-19 epidemic to complete the application to manage entry people from the time of entry, at the isolation area and to monitor their health after the end. On May 8, the Ministry of Information and Communications proposed to apply a specialized bracelet to support the monitoring of people in concentrated isolation and after centralized isolation developed by Vietnamese technology enterprises. According to the Ministry of Information and Communications, some countries have exported solutions to monitor quarantined subjects, but the use of available foreign solutions will lead to many limitations in mastering and customizing to suit the Vietnamese context. Male. The purchase of foreign solutions is also dependent on the production capacity of the partner, which can significantly affect the Covid-19 prevention and control plan. Meanwhile, Vietnamese enterprises now also have solutions (mastering technology and data stored in Vietnam) and sufficient production capacity, ready to deploy on a large scale in a short time. The quarantine bracelet can open up a new management direction for low-risk quarantined people, who will be fitted with a bracelet to monitor their self-isolation at home. This approach helps to reduce the risk of cross-contamination in the isolation area, and at the same time reduces the social burden, especially the epidemic prevention and control team. Besides this bracelet, a number of other technological solutions have been deployed by the National Center for Technology for Covid-19 Prevention and Control to manage isolation, manage vaccinations and certify electronic vaccines… the fight against the Covid-19 epidemic.

A model of the BeiDou Satellite Navigation System is displayed at the 12th China International Aviation and Space Exhibition in Zhuhai city, Guangdong province. (Photo: AP) Citing Yang Jun, deputy director of the China Satellite Navigation Office at a conference, Xinhua News Agency said that the country’s satellite navigation industry is worth more than 400 billion yuan in 2020, growing at a steady rate 20% year. China officially commissioned the Beidou 3 (BDS) system last July at a commemorative event attended by President Xi Jinping. As Beijing continues to invest in becoming a space power, Beidou is expected to be able to rival the GPS of the US and the Galileo of Europe. Launched in 1994, China’s Beidou project arose from the military’s need for its own satellite navigation system, replacing the US Department of Defense’s GPS. In particular, in 1996, a serious incident occurred when the Chinese military lost track of two missiles in the Taiwan Strait, possibly due to sudden GPS interruption. Since then, Beijing has invested heavily in Beidou to ensure an independent and stable satellite navigation system to guide missiles and bombs. The first BeiDou satellites were launched in 2000 and are now in their third generation, and are also commercially available. China actively promotes the use of BDS in the Asia-Pacific region, as well as in the Belt and Road Initiative countries. Beidou-related products are exported to more than 120 countries and regions, serving about 100 million users globally, according to Xinhua. BeiDou features are integrated in many popular smartphones. As a two-way communication system, Bac Dau allows compatible devices to send data to satellites, exchange text messages between two users, and track location in case of emergencies. Domestically, more than 7 million personal vehicles, 36,300 delivery and postal vehicles, 1,400 state-owned ships and 350 aircraft are using BDS. However, BDS also has its shortcomings. Last month, a truck driver in Hubei committed suicide after he was fined 2,000 yuan (US$305) because the vehicle’s BDS system was found to be disconnected during a routine inspection. Other drivers also filed complaints on the Hubei government website for similar disconnection problems. Du Lam (According to SCMP)

The song resounds in the summer wind: From the Lumbini garden the Buddha was born The fresh carefree flower blooms with the fragrance of the ten directions The city of Kapilavastu, the wind cheered, and the sky was bright People joyfully announce good news Prince Siddhartha was born. Lumbini – The sacred garden was officially recognized by Unesco as a world heritage site in 1997. Lumbini is located on a low hill at the foot of the Himalayas, about 25 kilometers east of the ancient Kapilavastu (now Kapilavastu), about 25 kilometers east of the Indian border. – Nepal 36 kilometers. Through the control gate, leave shoes outside, go inside, see a white building. White building At first, it was very strange to see the white building, but when I went inside, I realized that the building was built around to protect the excavated brick foundation to avoid further destruction. Because the camera could not be used, the crew could not record pictures, and memories could not be redrawn. Next to it is a stone that is said to be the footprints of the crown prince, protected in a glass cage. On the wall there is a stone bas-relief talking about the prince’s birth. Looking at the relief, you will see the queen with her hand on the branch of no concern and the birth of the crown prince on her side. Being able to sit quietly for a few minutes, no matter how far apart, the time apart seems to have not existed. But why this footprint is so respected, the answer lies at the base of the Bodhi tree by the Nile River. Next to the building is a stone pillar built by King Ashoka in 249 BC. King Ashoka Pillar Sit back here to meditate, more than 2500 years have passed, all traces remain, excavated and identified by archaeologists. If the location is not determined, everything is still there, but completely lost in the human mind. Confused about whether one person is present in this life, changing the outlook of many lives, just by saying one thing that everyone knows “blood is red, tears are salty” but it seems that everyone never knew. Called rebirth in the footsteps of Buddha. Following in the footsteps of Buddha… Looking across the lake is the Bodhi tree, formerly the tree of no concern. Legend has it that Queen Mada bathed in the pond, and when she went up to the tree to worry, she gave birth to a crown prince. There is no statue here, perhaps afraid of losing the beauty of the landscape, so the statue of the crown prince died and built another place. Came here without trying to walk a little more, so walking in the noonday sun, the group recorded a more brilliant golden image. Statue of the newborn Buddha Heaven and earth, Unique self. The world necessarily, Birth, aging, sickness and death. There are many ways to explain, if you don’t understand it, it’s okay, the conscious things can’t be separated, let life quietly answer. Is there anything outside the cycle of birth, aging, sickness and death? Leaving the garden of Lumbini, went to the city of Kapilavastu (Kapilavastu). Kapilavastu Citadel Kapila city lived peacefully in the life of the first king, who was happy Shakyamuni he had just been born. All the birds sing to celebrate the fragrant flowers and leaves. Bright rays of light shine throughout the mountains and rivers. Tree of no concern so far sentient beings are always reminded, where Lumbini still records how many happy days. Citadel of Ca-pil-la-vai is currently restoring the background of many brick foundations located at the palaces… Passing a place to see the prince standing in front of the room door, silently bid farewell. Once upon a time read Golden light by Uncle Vo Dinh Cuong, the passage about when the crown prince heard the voice: “ The hour has come! The hour has come!” Three times He went out, three times He came back. But the last time with determination, he put the hem of his shirt on his head, pulled back the curtain, and stepped out…” The places where the foundation of the citadel has been excavated, although it has not been determined where, but there is no place here that does not have that image. Go gradually to the gate of the East city, where the prince crossed the city to become ordained. Standing on the ruined brick floor looking to the East, imagine a Kien Trac horse soaring through the city gate like pictures cherished by many people since childhood, a way beyond the ceiling. Not enough time to get to the Anoma River, standing on the city floor and looking at the horizon. “The front is full of dark green water and forest! The majestic scene here makes people shiver: The Anoma River (Anoma) surges and waves. The message on the other side of the bank, each mountain range overlaps. on top of each other. Desolate, desolate, surrounded on all sides. Not a single human footprint has been left here! (Excerpt) Golden light – Vo Dinh Cuong) The Anoma stream undulating green reed banks, Looking at Shakyamuni’s azure water, his heart was steadfast, Come back, let me enjoy the golden light, I have determined to find the bright path to save sentient beings, … Anoma still remembers to set a shining example, We now vow to follow Compassion. Farewell to Kapilavastu, now also go to the East. The direction is sometimes not important, but the destination is in which direction. (Excerpt) “Travel to Indian Relics” – 2019)

The researchers found that from their first flight, these echolocating mammals somehow knew exactly how long it would take for the sound waves of their calls to echo from their prey. again. An innate reference point related to the speed of sound allows bats to judge distance in units of time, as opposed to spatial units like humans. Unlike humans who rely heavily on sight, various types of bats “see” the world around them with their ears. However, just as our eyes can fool ourselves, bats don’t always decode their echoes correctly. Illustration. For the test, the team housed six newborn bats in normal atmospheric conditions, as well as five newborn bats in helium-enriched air. This will increase the speed of the sound. These two groups were then tested for echolocation in their respective environments. When approaching a food target, helium-enriched airborne bats displayed echolocation patterns and normal airborne bat-like flight behavior. When a bat flies and lands somewhere, it requires precise coordination between its call to attract and its body. As the creature gets closer to its target, the bat’s echolocation speed increases, and when landing slows, it rolls its body, straightening its legs. However, in an environment where the speed of sound travels faster, this all happens much faster, causing the bats to land ahead of their target. Despite many attempts, the bats still managed to approach the target using the normal sound reference speed. The problem is that bats never learn from their mistakes. Even when adult bats were conditioned in a helium-enriched environment for several days, the researchers found that they were unable to change this fixed reference point. This is surprising, since sensory learning is an advantage for many animals, especially those with the ability to change conditions. Little known secrets about bats According to the analysis results of scientists, in the feces of bats there is a lot of potassium nitrate salt, also known as salt pepper. This chemical is the main ingredient in many fertilizers. At the same time, it is also used to make explosives and detonators. In the past, especially during the American Civil War, bat droppings were considered an important resource for both sides. Because from this waste, one can extract salt and pepper (which is quite scarce) to supply the army. When it comes to bats, most of us probably think of animals with a “unique” way of sleeping upside down. According to scientists, this unusual sleeping position of bats actually has its own purpose. Specifically, unlike birds or insects, the leathery wings of bats are not strong enough to easily lift them from the ground to the air. Therefore, when resting, bats always choose an elevated position so that when they need to fly, they just drop down, taking advantage of air resistance to support take-off. However, according to statistics, there are 6 species of bats that do not hang upside down when sleeping. Most of them have suckers on their limbs, allowing them to cling to leaves or other flat surfaces to sleep. In fact, only small bats (suborder Microchiroptera) have poor eyesight and must be located using sonar. Meanwhile, the larger representatives (of the suborder Megachiroptera) possess excellent eyesight. Even the vision of these bats is better than that of humans. However, in exchange for “bright” eyes, members of the suborder Megachiroptera do not know how to use ultrasound waves.

Signing units hand over the Covid-19 epidemiological digital map system Attending the ceremony, representatives of leaders of Departments of Information and Communication, Hoa Binh Health, Phuc Hung Group Joint Stock Company, People’s Institute of Informatics, Hanoi Association of Informatics and Telecommunications. Epidemiological digital mapping software has been developed, upgraded and supplemented by a group of technology experts from the Covidmaps digital map to facilitate the search and update of information related to the Covid-19 epidemic. According to the supplier, the epidemiological software has optimized many upgraded features to help support communication about Covid-19. The software is also synchronized with vaccination activities such as: On-the-spot declaration at the epidemic prevention and control point; Tracing travel schedules; Accurately locate the blocked area, medical isolation. In addition, there is a notice of vaccination and vaccination points; Synthesize report data quickly and timely with an easy-to-use interface with the State management unit and the people. Epidemiology software of Hoa Binh province can be accessed at: http://Covidmaps.hoabinh.gov.vn . In the past time, the authorities of Hoa Binh province together with units have urgently installed and updated information and data to serve the construction and development of the system “Digital map of Covid-19 epidemiology”. Hoa Binh province”. By this point the Basic System is complete and ready to be put into operation. Thereby, this locality will be proactive in disease control. At the ceremony, the units signed, handed over and put into use this system.

As noted by Fox News, NASA’s rocket launch window opened at 20:04 and the rocket launched at 20:36 on the same day. About 10 minutes after launch, the Black Brant XII rocket ejected barium vapor at an altitude of about 350-400km above the Atlantic Ocean, just north of Bermuda and about 870-900km from Wallops. The barium vapor from the NASA rocket is not harmful to the environment and has formed two blue-violet clouds that can be seen across the East Coast for about 30 seconds. However, clouds prevented the launch from being viewed with the naked eye. “This is the last date NASA intends to authorize a rocket launch from Wallops. The vocal rocket was originally scheduled to launch on May 8 but has been postponed several times a week,” Fox News wrote and reported. For further information, the Black Brant XII rocket launched during NASA’s KiNet-X mission – designed to study how energy and momentum is transported between different regions of space with a magnetic connection. The Black Brant XII missile is a 4-stage rocket. Peter Delamere, KiNET-X principal investigator from the University of Alaska Fairbanks said: “The aurorae – also known as the north pole or pole light, is formed when particles in the ‘near universe’ of the Earth’s ‘near space’. Earth interacts with the atmosphere Electrons in Earth’s space environment and in the solar wind are relatively low in energy, however, the aurora is produced by very high energy electrons. Vapors emitted from the rocket’s payload will generate magnetic interference and potentially energized electrons.KiNET-X consists of a single rocket launch carrying seven separable payloads – equipment primary diagnostic device, along with four small sideloads and clouds of barium vapor set to release from two additional, larger payloads”. Beautiful performance Analyzing further, meteorologist Katie McGraw told News 5 that when the launch happened, people in Northeast Ohio could see it thanks to clear skies. NASA called the May 16 launch of the Black Brant XII rocket a “beautiful display” and couldn’t have written a better story. Katie McGraw further revealed that the Black Brant XII rocket was used for the mission to explore energy transport in space. Black Brant is the result of research at the Canadian Arms Research and Development Facility (CARDE) in the 1950s into the nature of the upper atmosphere as part of ongoing research into anti-missile systems. ballistic fire and long-range communications. The launch took place on May 16 after a week of waiting. In 1957, CARDE contracted with Bristol to produce a simple rocket fuselage, called the Propulsion Test Vehicle, for high-powered solid fuel studies. Albert Fia’s design is quite heavy, as it is designed to accommodate a wide range of engine burn times, propellant loads and launch angles well suited to its role as a test vehicle for development. ABM system. The first test flight took place just two years later. CARDE’s attention then turned to long-distance communications, and they found the propulsion test vehicle system useful as a locating missile. To better suit this role, Bristol modified the design to be lighter and more suitable for the Black Brant missile role. CARDE has launched several Black Brant rockets over the years with the original Black Brant I design able to carry a payload of 68 kg to an altitude of 150 km and fly for the first time in October 1960. The missile’s design emphasizes payload reliability and range. There are 12 versions of the Black Brant and the Black Brant XII is a four-stage sonic launcher manufactured in 1995. The missile was first launched from the Andoya rocket range off the northwest coast of Norway and caused an explosion also known as the fear of Black Brant. This incident has put Russia’s nuclear forces on high alert, fearing a high-altitude nuclear strike could blind Russia’s radar, and Russia’s Cheget “nuclear briefcase” has been put on high alert. sent to Russian President Boris Yeltsin, who must then decide whether to launch a retaliatory nuclear strike against the United States. This is the first and only known incident to date where any nuclear-weapon country has activated its nuclear briefcase and prepared for an attack. On September 19, 2009, a Black Brant XII rocket launched to study the clouds caused calls from eastern North America reporting “strange lights in the sky”. NASA reported that the light came from an artificial noctilucent cloud formed by the exhaust particles of the rocket’s fourth stage at an altitude of about 278 km.

Apple AirTag becomes an interesting accessory for Apple users As noted at the Mobile Institute system – Phone retail system with on-site repair and warranty repair, the first unit to bring the Apple AirTag locator to Vietnam market, the number of customers coming to buy navigation devices AirTag is quite large, after 5 days of opening, nearly 300 products have been sold, of which the 4-pack combo accounts for 40%. Currently, the price of AirTag sold at Mobile Institute is quite good, only 1.09 million VND and 3.99 million VND for a combo of 4 devices. This is considered an attractive price for Apple’s cult navigation line. According to the forecast, by the end of May and the beginning of June, the price of the navigation device will be stabilized after a period of launch, the price of AirTag may return to VND 790,000 and the 4-pack combo will cost VND 2.79 million. . The AirTag is a small circular tracker that attaches to things like wallets, bags or keys and allows users to track items in the “Find My” app on iOS. Using Ultra WideBand technology and U1 chip, AirTag can accurately measure their distance from iPhone and return the exact location. AirTag is an accessory with many smart gadgets worth owning.

EUSPA headquarters in Prague. (Source: insidegnss.com) The Vietnam News Agency correspondent in Prague quoted the Czech news agency (ČTK) as saying that the European Union’s space program agency ( EUSPA ) officially operated in Prague from May 12. The EUSPA will centralize the operational management of the EU’s space programmes, while remaining responsible for managing the Galileo navigation system and other space programmes. It is the only EU agency based in the Czech Republic. In the announcement, CEO Rodrigo da Costa said: “EUSPA will play an important role in the implementation of the space program and the realization of the EU’s ambitions. This will be achieved primarily by using maximize the synergy between the various components of the program, especially navigation, Earth observation and secure communications, to stimulate innovation across multiple sectors.” In addition, EUSPA will provide European satellite navigation services, and will operate in the commercial use of data and services from Galileo, EGNOS and Copernic. Another objective of this body is to prepare the coordination of the EU satellite communications program within the public administration ( GOVSATCOM ). EUSPA, formerly the European Global Positioning Satellite System Agency, also known as GSA, has been headquartered in Prague since 2012. According to a representative of this agency, GSA has paid the Czech Republic budget nearly 130 million euros in 2020. After the expansion, the financial contribution is forecast to increase. The number of employees will increase from the current 200 to 600 employees, so the Czech Republic is looking for a new space for the agency, replacing the current headquarters on Janovského street in Holešovice of Prague which will not be enough in the future. future./.

However, one sense that humans can soon master, is bat-like echolocation. Sixth sense experiment According to the Popular Mechanics Scientists in Japan have tested this ability in a laboratory, proving that humans can use it echolocation , or the ability to sense echoes for navigation. This ability helps people recognize the shape and rotation of many objects. Thanks to that, people can “see” in the dark. When the volunteer presses the tablet, a synthesized echo is emitted from the amplifier speaker (red line). The sounds obtained with the binaural are 1/8 of the original pitch by reducing the sampling frequency, which is transmitted into the volunteer headphones (green line). Photo: Miwa Sumiya. As bats fly around objects, they emit intense sound waves from different angles and bounce off at isolated intervals. Thanks to that, this tiny mammal can determine the topography, texture or movement of an object. According to Dr. Miwa Sumiya, if humans were able to perceive the patterns of time-changing sounds similar to bats, they could see the world in new ways. Dr. Sumiya, a researcher at the Center for Nerve and Information Networks in Osaka, Japan and was the first author of a paper to appear on Plos One on this topic. “Testing that humans are capable of detecting multiple environments via sound waves could add a new step in understanding the complexity of the human brain,” Sumiya said. According to Sumiya, humans have the ability to further understand the perception of other species (such as bats) by comparing with knowledge gained in echolocation studies of humankind. To test this theory, Mrs. Sumiya’s group made a meticulous arrangement. In one room, the researchers gave volunteers a pair of headphones and two tablets, one that produced a calibrated signal using a synthesized echo, the other to listen to pre-recorded echoes. . In room 2, only the strangely shaped 3D axes stand in one place and rotate around themselves. When prompted, 15 volunteers turned on echolocation signals from their tablets. The sound waves emit each beat, travel to room 2 and hit the 3D axes. Participants need a little bit of imagination to convert sound waves into a certain object. Sumiya explained that the synthesized echo-locating signals used in this experiment were high-frequency signals up to 41 kHz, which cannot be heard by humans. Dolphins are also a mammal that uses echolocation to detect and hunt. Photo: Getty Images. Researchers used a humanoid (1/7 the size of a real skull) to “hear” the sound in room 2 before passing it on to volunteers. The fake head is equipped with 2 microphones attached to the two ears and creating a 3D resonance. The sound output is quite similar to the surround sound experienced in movie theaters. Reducing the frequency of the echoes in both ears enabled volunteers to hear “with the feeling of being heard in real space”. Many people like to listen to podcasts or watch videos with headphones to create surround sound and give a tingling sensation in their ears. This is called the Autonomous Sensory Meridian Response, or ASMR. Result Finally, researchers and volunteers guessed whether echoes were coming from stationary or spinning objects. At the end of the experiment, the volunteers were able to accurately identify two pillars thanks to the time-varying echolocation signals emanating from them. Identifying clue is thanks to the pitch and timbre. However, it was difficult for them to discern the shape of the standing pillars. Sumiya’s group study is not the first to test the ability of human echolocation. Previous studies have shown that blind people can use mouth-clicking sounds to see 2D objects. However, Ms. Sumiya said her experiment was the first to specifically explore the ability of echolocation to change over time. The researchers said their work is evidence that both humans and bats are capable of decoding objects through sound. In the future, engineers could apply this technology to wearable devices such as watches or glasses to improve how visually impaired people can navigate the world, except for headsets.

Photo: Howtogeek In addition to the iPhone, iPad, Apple Watch, AirPods and MacBook lines, on April 20, 2021, Apple officially launched a new device called AirTag. This device is designed for users to track down and find lost items. This device has been rumored and expected for a long time and now it is officially released. Reasonable price AirTag selling price announced by Apple is $ 29, equivalent to about 700,000 VND. That figure is even $ 6 lower than the Tile Pro and on par with Samsung’s SmartTag +. Apple also offers more options for customers to buy four units priced at just $ 99. Early orders are scheduled for delivery on April 30th. Compact design Photo: Macrumors AirTag comes in the form of a white round knob with a metal plate on one side and is slightly larger than the bottle cap. They measure 1.26 inches in diameter and 0.31 inches tall and weigh 0.39 ounces (11 grams). For each Airtag, customers get free engraved names, including text and a choice of 31 emojis, when purchasing from apple.com or the Apple Store app. Hardware This device has a built-in audio speaker that makes it easy to locate the Airtag. Each AirTag has an integrated accelerometer, a replaceable CR2032 battery and can be used continuously for 1 year thanks to the energy-saving Bluetooth LE technology. Users can click on the back of the Airtag to replace the battery for their device. The way it works is simple Photo: CNBC Initially, users will connect AirTag via iPhone, iPad, will have pop-up when the product is near iDevices similar to the general AirPods connection. When you tap AirTag in the Find My app, it uses input from the camera, ARKit, accelerometer, and gyroscope, then transmits the user signal to the AirTag privately using combines audio, tactile and visual feedback. When activated, Airtag will continuously scan and connect to any nearby iPhone, iPad, or Apple Watch to send information and location updates to users through their iCloud account. Optimized use with new iPhone models Photo: Mac World AirTag requires only iPhones running iOS 14.5 and iPads running iPadOS 14.5 to function. This iOS 14.5 / iPadOS 14.5 update will arrive next week, before the accessory goes on sale. This means that all iPhones from the iPhone 6s and later use this device. However, if you own an iPhone with U1 chip, that is, iPhone 11 and above you will make the most of AirTag’s capabilities. With U1 chip, you can easily orient accurately as well as calculate the distance from you to objects. Is the Airtag waterproof? According to Apple’s Newsroom, the AirTag is IP67 water & dust resistant. That is, it sinks 1 meter of water for 30 minutes, and normal daily circumstances will not affect AirTag when you let it get caught in rainwater, splashing water, dust, sand, … Airtag connection range Although not officially confirmed by Apple, many sources have said that the device can connect and work well with a maximum range of up to 100 meters. At this distance you can easily find your objects with precise navigation and distance measurement in the Find My app. How to find a lost item with Airtag Photo: CNBC When the user’s device is out of range of Bluetooth connectivity, the device relies on the Find My network with more than 1 billion Apple devices globally. Apple devices near the AirTag will scan and find it, when found, it will transmit the signal to a device connected to the network and send location information back to the owner. In addition, even when there is no iOS device nearby to detect, AirTag itself, when detached from the host iOS device for too long, will make a noise for others to see it. Those who find AirTag can use an iOS device or any NFC device to view the information of the owner of the AirTag. Security Apple believes that location data and location history won’t be stored anywhere. In addition, all location information will be end-to-end encrypted and not stored anywhere.This also means that only the owner and the AirTag will read each other’s locations.

Pole-21 increasingly asserted its place in the Russian military. (Source: Top War) Shield against potential hazards Pole-21 is resistant to high-precision weaponry and other enemy systems using the satellite navigation system. The mission of this combination is to jam and suppress signals from the navigation satellites. In addition, they can accurately detect the enemy’s coordinates, missiles, bombs, aircraft … and handle other assigned combat missions. The weapons complex consists of R-340RP signal reception poles, including the control equipment and interfering antennas, capable of suppressing radio signals at a minimum range of 25km. The combination is capable of suppressing signals from all current navigation systems. The R-340RP antenna stations are mounted on cell towers that are installed at a suitable height or mounted on car chassis with a basin module. Compatibility with various power sources guaranteed. Each pole consumes up to 600 watts of power. Communication between the composite’s components can be maintained through the radio. Therefore, during the installation process it is possible to use GSM antenna as a backup. Pole-21 can be deployed and installed in large numbers over a large area, depending on topography and topography. In favorable areas, a “dome” consisting of 100 antenna columns allows coverage over 22,500 square kilometers. Distribution of Pole-21 In August 2016, Russian media reported that the Pole-21 system was officially preparing to be put into service for the military. In November 2019, the Russian Ministry of Defense announced that Pole-21 had transferred to an electronic warfare unit from the Central Military Zone in charge. Shortly thereafter, in early December 2019, some sources said that the Ministry of Defense continued to deploy the Pole-21 system at base 201 of the armed forces in Tajikistan and operated in alarm mode. In January 2021, the Ministry of Defense announced that by the end of this year, the Central Military Region units would receive 10 additional Pole-21 complexes. These products will be delivered to deployment units in Urals and Siberia. Moreover, Russia also recently officially announced the Pole-21’s presence at the Tartus base in Syria. This system, which works in conjunction with other modern air defense systems, is used to counter potential raids and to prevent potential adversary attacks. In addition, experts from the 49th Army of the Southern Military Region used the Pole-21 combination in training activities. It is known that in the exercise, “Pole-21” mainly confronted the enemy drones. Future protection system The Russian Army Base 201 is the first unit to use this combination. In early January 2020, the system officially worked covering residential areas, armory and locations of important Russian air defense complexes. Through recorded reports, the use of Pole-21 combination in different exercises has brought many positive signals. These products are used independently, or in combination with other electronic warfare systems, completely convenient and effective. In October of last year, Central Military Region troops combined with the “Zhitel” jamming station succeeded in destroying UAV communications. In Tartus, with support from Pole-21, the Ratnik complex. -Kupol suppresses the signals for navigation and control channels. The recent drills in the Southern Military Region demonstrate the Pole-21 system’s capabilities to operate in the reconnaissance and attack lines of the combined armed army. Electronic warfare units act as part of the battalion-level tactical group and protect them from reconnaissance drones. The transfer of the Pole-21M serial electronic warfare system to the military has only started in mid-2019 and was received by subdivisions. It is known that the production and supply of these equipment will continue to develop, of which the Central Military Zone will receive 10 new complexes this year. In the past, the Pole-21 complex has confirmed their ability in trials, as well as their potential in the framework of various scale exercises. In particular its ability to interrupt enemy navigation, interrupt mission execution and ensure the protection of its facilities has been repeatedly demonstrated. It is easy to see that the Pole-21 unit, with all its proven advantages, deserves to be an excellent external signal suppression system, which completes the task perfectly. thanks to its high technical characteristics and mobility. In addition, the principle of preventing satellite positioning is consistent with the current development trends of the military and weapons. (According to Top War)

Combined with the Find My app on iPhone, iPad and the global iOS device network (Find My network), AirTag users can locate the device even when the device is out of Bluetooth coverage. “If the AirTag gets lost and out of Bluetooth coverage, the Find My device network can locate it… Using billions of Apple products around the globe, they will catch the lost Bluetooth emitted by the AirTag the owner’s device location anonymously and privately “, Apple shares about the AirTag’s location feature. As such, AirTag does not have GPS. This means the device cannot notify the real-time location to the user. Besides, GPS allows independent operation, no need for range of connection like AirTag. Having range of connectivity means that AirTag may be out of network coverage. If the device is out of Bluetooth coverage and is not near any iPhone, the AirTag will not be able to display the exact location. In Vietnam, AirTag is priced at VND 790,000. Photo: Apple. In addition, Apple claims the location is not saved in AirTag, data transmitted to the Find My app is also end-to-end encrypted. After being launched by Apple, many people said the Find My network was a loophole, making AirTag can be abused to track other people. However according to the page Mashable Apple has designed a special feature on AirTag to help prevent this. Specifically, Apple describes that iOS devices can detect lost AirTag from its owner. Also plays a notification if an AirTag moves with them from one place to another. If the tracked person is not using an iOS device, the AirTag itself will play an alert bell while on the move to get attention (if it is lost from the owner for a long time). If detecting strange AirTag, users can turn it off by touching iPhone or NFC-enabled device and then following the instructions. However, Apple has not yet said what the ringing will be from AirTag. The time it takes for AirTag to ring the bell since leaving the owner’s hand has not been revealed. Therefore, using AirTag to spy on others is still worrying experts. Apple launches new purple iPhone and improved iPad Pro M1 During the Spring Loaded event taking place at 0:00 on April 21 (Vietnam time), Apple introduced a series of products including iPhone 12 purple version, new design iMac, AirTag card, iPad Pro M1.

At Spring Loaded this year, Apple is expected to launch a new iPad product line, Apple Pencil 3rd generation and most notably AirTags. The event will still be broadcast live as a livestream and users can watch it through the Apple website, Youtube and the Apple TV app. With the iPad product, analysts said that the main focus that Apple is aiming at Spring Loaded will be the iPad Pro, iPad mini and updates for the low-cost iPad line. In particular, the 11-inch and 12.9-inch iPad Pro models will have major changes, including updated features and equipped with the powerful A14X Chip, the high-end 12.9-inch mini LED screen will also be thin. 0.5mm more than the previous generation. Looking back at last year, Apple has launched iPad 8 in September, the current period seems a bit short for “the Apple” to promptly upgrade new product line. But according to analyst Daniel Ives’ prediction, the iPad mini 5 also needs a successor product and Spring Loaded could be a reasonable time for Apple to introduce a new product. In addition, analysts also believe that the price of the iPad Pro model will increase moderately, while the next-generation iPad mini and iPad will have the same price, except for models equipped with a 5G modem. In addition, AirPods3 is also the name receiving attention from users, because Apple has previously delayed the launch of this product in March. The interesting thing is right on the front door Spring Loaded , even eBay, Wal-Mart, Etsy and a number of other online sales channels have launched AirTags accessories. It seems that the “Apple family” believers have certain confidence in the appearance of useful accessories for devices like this iPhone and iPad. From previously disclosed information, it can be seen that the AirTags material is similar to the elastic band of the Apple Watch Sport, and there is a concealed lock used to fix the AirTag at the end, so that users can hook copper. Smart watch into any widgets desired. Finally, there are rumors that AirTags is equipped with an ultra-wide bandwidth U1 chip, which supports more accurate object search and locating than Bluetooth. What about the truth, please wait patiently for the event to be broadcast live at 0 o’clock tomorrow morning.

Apple held the first event of the year 2021 on April 20 (local time). Most likely, “Spring loaded” focuses on the new iPad with a rumored product for a long time. The invitation to the press appeared with a colorful spiral image forming a “vacant apple”, the Apple logo, full of spring breath. iPad Pro There are two things that usually happen in spring: blooming flowers and the new iPad. Apple is expected to launch a new iPad Pro model equipped with faster chip, 5G support, Thunderbolt port to connect to more external displays and a Mini LED display. IPad Pro screen can increase brightness, contrast, improve power for longer usage time, but thicker than the current version. Additionally, the company is likely to show off the new iPad mini, thinner bezels and larger screens. However, it is not clear if it will be enough to convince users to upgrade. According to Eleftheria Kouri analyst from technology consulting firm ABI Research, tablet sales will increase sharply in 2020 thanks to learning and working remotely. Even so, the trend doesn’t last forever. Manufacturers, including Apple, need to introduce a truly groundbreaking feature to boost sales and encourage users to replace old devices, she said. 5G is one of these. AirTags Perhaps the most rumored product is the AirTags, a Bluetooth accessory that attaches to objects such as keys, wallets, laptops or cars to find them faster. Information about AirTags leaked from 2019, when users discovered hidden images in iOS 13 suggesting a circular, flat, small disc, integrated chip to locate objects when connected to the Find My app. Apple’s. It can use augmented reality (AR) technology. In iOS 13, a piece of code reads: “Walk around a few meters, move iPhone up and down until you see a balloon”, this is the position of the AirTags attached object. Apple TV, security features and more According to blog 9to5mac, not only does the Apple TV have a new chip, better support for gaming, it also comes with a redesigned remote. In addition, Apple may also introduce AirPods 3, designed to match the higher-end AirPods Pro models. AirPods have become a symbol of fashion and status, but Apple will almost wait until the end of the year to release a more pronounced version of the upgrade. In addition to products, the iPhone manufacturer may mention privacy issues in iOS 14.5. App Tracking Transparency feature requires application developers to consult before collecting user data and publish details of how they collect, what to use. Either way, all the attention will be on the new Apple device during the event. Despite production disruptions, the semiconductor crisis and economic uncertainty, demand for consumer electronics products remains flexible, according to Kouri analyst. Event “ Spring loaded “Took place at 0:00 on April 21, Vietnam time, streamed via the website Apple, YouTube and Apple TV. Du Lam (According to CNN)

There is a copy of the book “The American Practical Navigator” by Nathaniel Bowditch, first published in 1802 on each of the US Navy ships.

This is considered an encyclopedia about navigation, filled with data on the longitude and latitude of many places, from Bugio lighthouse in Lisbon, Portugal, to Kannonzaki lighthouse in Yokosuka, Japan.

The book provides detailed instructions on how to use a hexagonal glass to measure a ship’s current position by observing the Sun, Moon, stars, and horizon. However, the presence of this book on board is only a ritual, as the US Navy has long been accustomed to using electronic charts based on GPS, Nikkei Asia said.

But the threat of electronic warfare from rivals like China, forcing the US Navy to consider the possibility of reusing the supposedly outdated navigation system, in preparation for the GPS system scenario prepares the enemy. disable.

Combining ancient and modern

In August 2020, the USS Patriot, an Avenger-class minesweeper of the US Navy stationed at the port of Sasebo, Japan, crossed a distance of 1,700 km into the western seas solely by astronomical positioning.

A pilot is using the hexagonal glass to calculate the ship’s position in the Pacific. Photo: US Navy.

Every afternoon, sailors would take a hexagonal glass, a centuries-old measuring instrument, to measure the angle of the Sun at its highest point in the day. The data will be fed into a computer program called the astronomical estimation system of latitude and longitude, also known as STELIA.

Sailors also observed the angular distances between the horizon and the Moon, the planets and the stars to calculate longitude and latitude. On the command tower, a navigation team consisting of the captain, subordinate officer and the pilot uses manual measurement data to control the ship.

Astronomical navigation has disappeared from the US Naval Academy curriculum since 2006, because it was deemed obsolete. But since 2015, the technique has been reintroduced into the program, to teach students how to measure and apply math to locate.

The re-teaching of astronomical navigation has been prompted by the acknowledgment that the US armed forces are increasingly dependent on digital systems. An attack on the GPS system that the US military is relying on, could limit the capabilities of the world’s most powerful military.

This concern becomes even more urgent as China invests heavily in electronic warfare and cyberspace.

Peter Singer, an expert at the Center for New Security of America, said the battle to kick off the next big war will take place in silence. In other words, it’s the war in cyberspace.

If digital communication was to be attacked, the US Navy would have to rely on the natural world, ears and eyes to survive, which is the reason for the return of the hexagonal glasses.

Learn how to position birds

Mr. Singer said that in addition to the astronomical navigation system dating back to the 18th century, the US should study another smarter navigation system for navigating ships, or guided missiles without relying on GPS. , similar to how birds migrate annually.

One sailor is working on calculating longitude and latitude based on Bowditch’s book. Photo: US Navy.

“The way they (the birds) move is not memorizing, it’s how they perceive Earth’s magnetic field. Some insects can do this too, so in-depth research is needed to develop a digital version of how birds move, ”says Singer.

The U.S. Defense Advanced Projects Research Agency (DARPA) is pursuing the Adaptive Navigation System project, a navigation technique that can work in buildings, under dense canopy, under water and ground. This system is said to be superior to GPS.

In February, a team of scientists released a report stating that birds may have global GPS systems.

“The precise navigation of these little birds is amazing, as they move alone across the sea, across the vast desert and through extreme weather conditions is one of the long-standing mysteries. behavioral biology “, a British scientist wrote on the World Economic Forum.

This may be the answer the US military is looking for in its defense mission against electronic warfare operations by China and other adversaries.

Billy Fabian, senior analyst at data analytics firm Govini, said preparing for the scenario of digital communication disruption is crucial, given the potential confrontation with China.

The starry sky illuminated the aircraft carrier USS Ronald Reagan as it passed through the Luzon Strait. Photo: US Navy

Specifically, at noon, sailors will take a hexagonal glass – a positioning tool that has existed for centuries – to measure the angle of the Sun at its highest point in the day. The data will be fed into a computer program called the Astronomical Latitude and Longitude Estimation System, or STELLA. They also observed the angular distances between the horizon and the Moon, the planets and the stars to calculate latitude and longitude.

On the jetty, a crew consisting of the captain, subordinate officers and the pilot used the above data to control the ship night and day.

The return of astronomical navigation

The Nikkei Asia Financial Times reported that astronomical navigation, or space travel navigation, disappeared from the US Naval Academy curriculum in 2006 because it was deemed obsolete. But in 2015, the school reintroduced this technique as well as sent students to a planetarium to teach how to measure and apply mathematics.

An officer on board the guided missile cruiser USS Mobile Bay uses a positioning device to measure the ship’s position in the Pacific. Photo: US Navy

The return to this method of positioning was prompted by the realization that if the US armed forces increasingly relied on digital communications, a blow to the Global Positioning System. (GPS) – on which this communications system relies on – could make it difficult for the army considered to be the most powerful in the world. That concern is growing in the face of China’s increased electronic and cyber-warfare capabilities.

Peter Singer, strategist at consulting firm New America and author of “Ghost Fleet: A Novel of Next World War” (roughly translated: Ghost Fleet: Novel of the Next World War) commented: “Battle The opening battle of the next great war will take place in silence ”.

According to him, this battle will not be the same as the battle of Pearl Harbor that dragged the United States into the war with Japan in 1941, nor the horrifying battle that opened to the Iraq War in 2003. “It may even have been and is already happening.” Because, in cyberspace, enemy moves still happen weeks, months or years before the outbreak of war.

If digital communications were to be removed, the US Navy would return to the natural world, relying on eyes and ears to survive. Therefore, a return of the hexagonal glass is imperative. But the strategist Singer believes that there are still two other options than this 18th-century utensil.

One is to build a more flexible communications network and improve network security to help the military combat any GPS-related challenges. Second is the development of highly intelligent systems that do not require GPS.

“For example, there is research showing that rockets can fly by navigating against a magnetic field,” says Singer. He equates this with the ability of birds to migrate as they travel thousands of kilometers to reach almost exactly one destination every year.

Answering Nikkei Asia, he explained: “It is not because they remember the way. That’s how they perceive the Earth’s magnetic field. The same goes for insects. So there has been high-tech research on developing digital versions of the way birds and insects navigate.

“Learn” from birds

The Department of Defense Senior Research Projects Administration (DARPA) is pursuing the so-called Adaptive Navigation System. This GPS-equivalent method of positioning, navigation, and time will work even in poorly wave places such as inside buildings, in canyons, in dense woods, underwater and underground. .

In February, a group of scientists including Professor Richard Holland at Bangor University and professor Dmitry Kishkinev at Keele University published a report indicating that birds can possess a “global GPS system. “.

Scientists believe that birds possess a global “GPS system”. Photo: Reuters

“The amazingly precise navigation of these little birds – as they travel alone over stormy seas, across vast deserts, and through extreme weather and temperature extremes – has been one of the the enduring mysteries of biology, ”wrote British scientists for the World Economic Forum.

“An evidence-gathering agency has shown that the Earth’s magnetic field is one of the most likely theories for this mystery. It is thought that the different parameters of the Earth’s magnetic field could form a network of maps that birds will fly with, ”they said.

“If birds know that magnetic field strength increases as they go north, they will be able to detect their position on the North-South axis wherever they go,” the report said. said the report. This means that the birds are essentially navigating using a system similar to Cartesian coordinates – the basis of modern GPS navigation.

Nikkei Asia asked Holland if anything from bird navigation could be used in the military. “In theory, the Earth’s magnetic field could be used as a positioning system,” he said. However, he warned: “It is not clear whether this system can be used on a global scale as GPS could, since there are several locations on Earth that share the same characteristics. magnetism”.

However, this could be the answer the US military is looking for in its mission to protect against electronic warfare by China or other countries.

Billy Fabian, an expert at data and analysis firm Govini and a senior colleague at the Center for New American Security, says it’s important to prepare for the scenario where communications are disrupted. when considering the nature of a potential war with China.

“A future conflict between the US and China will be different from past conflicts in two respects,” he said. One, every sector will be highly competitive, and that’s different from what we’re used to. Second, we will be under enormous time pressure. Most of the places that you can imagine we will fight in the future are in the backyard of China, but one ocean away from the American continent.

The US military is also practicing the concept called “mission command”. Accordingly, the commanders at the front lines are empowered to plan, coordinate and execute decisions without having to ask for instructions from their superiors. In this way, small units can continue to operate even when communication is interrupted.