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)

Specifically, this map provides epidemiological information, such as: living areas and contact places of patients infected with Covid-19 in 14 days, concentrated isolation points, medical isolation areas and checkpoints. disease control …, help people not move to hot spots, avoid infection. When people have a need to find places where Covid-19 patients have been with the exact time, the system will look up the patient’s epidemiological information. With concentrated isolation points, the warning section will show the time of application, the maximum number of receptions, the number of people in quarantine and the number of people that can receive more. To use this digital map, users only need to access the address https://covidmaps.langson.gov.vn . Digital map of Lang Son province So far, the country has had 9 localities deploying Covid-19 epidemiological information mapping software, including: Da Nang, Bac Giang, Vinh Phuc, Bac Ninh, Quang Ninh, Quang Nam, Gia Lai, and Phu Yen. and Lang Son. Also on May 24, the Military Telecommunications Industry Group (Viettel) completed the installation and integrated connection of 3,000 surveillance cameras in isolated areas in the northern provinces. All image data from the camera is integrated into a centralized management system at the Monitoring Operations Center. The epidemic prevention and control agencies can monitor all activities in isolation areas from the 24-hour management system, minimizing developments that may aggravate the epidemic situation. Before that, right after the Covid-19 epidemic just appeared, Vietnamese technology enterprises were tasked with building software for epidemic prevention and control such as Bluezone, tokhaiyte.vn, NCOVI… In fact, these applications have been applied quite effectively in many localities in the quick tracking of cases. Experience from abroad also proves that the applications contribute effectively in zoning, isolating and stamping out the epidemic. For example, when Covid-19 began to spread in Wuhan (China), this locality applied the Beidou satellite navigation system to monitor freight transport, traffic flow, zoning, and distances. separate people in the city and with neighboring provinces. In particular, China has a system of facial recognition cameras placed everywhere. This system combined with big data, machine learning can analyze the travel schedule, body temperature, number of people in contact, thereby easily partitioning and isolating F1, F2, F3 as soon as F0 is detected.