What are the characteristics of the BDS 3 SoC?

1. It can meet the needs of electronic fences for shared bicycles.

Xie Jun, deputy chief designer of the Beidou-3 project and chief designer of the satellite of the Fifth Academy of Aerospace Science and Technology Group, said that the positioning accuracy of the Beidou-3 system has increased by 1 to 2 times compared with the Beidou-2, reaching the level of meters to 5 meters.

With the initial service provided by the Beidou ground-based augmentation system, the accuracy of Beidou-3 will be improved to the meter level, sub-meter level, decimeter level, and even centimeter level, and the centimeter-level accuracy can already meet the needs of the shared bicycle electronic fence. Xie Jun said that by then, the accuracy of China's Beidou will be comparable to GPS.

In the civilian field, the relationship between Beidou and GPS and other navigation systems is not competition and substitution, but compatibility and cooperation. At present, most Beidou chips are GPS-compatible dual-mode chips, which can use the satellites of two systems at the same time to calculate more accurate data. "Users don't care which system they're using, as long as it's easy to use.

Wang Bo said. According to the Aerospace Science and Technology Group, the Beidou satellite is designed and developed with compatibility with other systems in mind. After the completion of GPS, Beidou, GLONASS, Galileo and other systems, there will be more than 100 navigation satellites, which means that users around the world can receive more available satellite signals and enjoy great convenience.

2. Beidou chip** 5 years reduced to 1 US dollar.

With the wide range of applications comes an expanding market. According to the statistics of the China Satellite Navigation and Positioning Association, in 2016, the output value of China's satellite navigation and location service industry reached 211.8 billion yuan, a year-on-year increase. Among them, the core output value of chips and devices directly related to satellite navigation technology reached 80.8 billion yuan, and the contribution rate of Beidou to the core industry reached 70%.

In the medium and long-term planning of China's satellite navigation industry, the output value of the navigation industry in 2020 is set at 400 billion yuan, and Wang Bo believes that this goal is easy to achieve.

In 2012, when Beidou began to provide commercial services, the first-class grid of Beidou chips became a fatal obstacle to its industrialization, and now the situation has been reversed.

Xue Wentong, deputy general manager of a Beidou chip manufacturer, told the Beijing News that in 2012, a civilian-grade Beidou chip was 200 yuan to 300 yuan, and the unit price of GPS chips was only about 30 yuan at that time. Five years later, the unit price of Beidou chips has dropped to less than $1, which is the same as GPS chips.

This is mainly due to the improvement of technology, process and production capacity. Xue Wentong said that now the market acceptance of Beidou has been very high, and the annual sales volume of Beidou chips of his company is nearly 20 times that of five years ago. The vast majority of users buy Beidou-compatible chips, and the GPS single-mode chip market is negligible.

According to the statistics of the China Satellite Navigation and Positioning Association, more than 40% of the models of smartphones sold in China have been equipped with Beidou-compatible chips, and more than 30% of the models of passenger cars sold in China in 2016 were equipped with Beidou chips.

Xue Wentong believes that after the Beidou No. 3 network, the real application curtain of the Beidou system can be opened, "before it was just a small test, this is a bigger and bigger market." ”

BDS-1 is active positioning, the user sends a positioning request, and the processing center calculates the coordinates and then sends it to the user through the satellite. Beidou-2 is passive positioning, in addition to having the function of No. 1, it can also be like the GPS system, the user only accepts the satellite message signal, and the user machine calculates the coordinates, and the user coordinates do not have a user from the processing center - > satellite - >.

The official opening of the Beidou-3 system has freed China from the constraints of the GPS system, and at the same time, Beidou will become an extremely important infrastructure for China's economic and technological development.

The Beidou-3 system can be applied to all aspects of transportation, such as autonomous vehicle navigation, vehicle tracking and monitoring, vehicle intelligent information system, Internet of Vehicles application, railway operation monitoring, etc. It can also be applied to ocean transportation, inland waterway shipping, route navigation, airport scene monitoring, etc. For example, during the new crown epidemic, in order to avoid the gathering of people, Beijing activated the unmanned vehicles supported by the Beidou system to deliver takeaways and other items in some areas.

The application of the Beidou system to agriculture is also a good aspect, which can be used for farmland information collection, soil nutrient and distribution survey, crop fertilization, crop pest control, unmanned agricultural machinery, unmanned aerial vehicle plant protection and other applications. In terms of forestry, it mainly includes the measurement of forest area, the estimation of timber volume, the forest patrol by forest rangers, forest fire prevention, and the determination of regional boundaries.

The Beidou-3 system can also be applied to applications including mobile phone applications, vehicle navigation equipment, wearable devices, etc., and through the deep integration of information and communication, Internet of Things, cloud computing and other technologies, it has realized numerous location service functions.

China's Beidou system has been officially completed and can be put into use, no longer relying on the previous GPS

This means that the strength of our country has increased. It means that the development of astronomy in China has entered a new stage. Of course, it has also given the international community a new impression of China and admiration for China.

It shows that the future of our country is promising. Let us work together for the country, and if the youth is strong, the country will be strong.

In the future, many satellites will be in the sky, and China's science and technology will be more powerful. In recent years, China's scientific and technological development has become stronger, and its position in the international community has become more and more important.

Of course, the Beidou navigation system was not built overnight, it was completely built after decades of struggle by the Chinese people. At present, the Beidou navigation system has completed the goal of providing global services. According to the plan, in 2035, China will build a comprehensive positioning system with Beidou as the core.

The Beidou-3 system was officially opened, and the main functions of the Beidou-3 system are as follows: first, the space segment of the Beidou system adopts a hybrid constellation composed of three orbital satellites, which has more high-orbit satellites and strong anti-blocking ability than other satellite navigation systems, especially in low-latitude areas. Secondly, the Beidou system provides navigation signals at multiple frequencies, which can improve the service accuracy through the combination of multi-frequency signals.

Finally, the Beidou system innovatively integrates navigation and communication capabilities, with five major functions: real-time navigation, fast positioning, precise timing, position reporting and short message communication services.

The main functions of the BDS-3 system include the provision of satellite-based augmentation services in accordance with international civil aviation standards, the provision of international search and rescue services in accordance with the standards of the International Search and Rescue Satellite Organization, and the provision of better signals for the world.

Beidou-3 should have three functions. One is positioning. The second is navigation. The third is timing, which provides accurate time.

1. The Beidou-3 Global Navigation Satellite System (hereinafter referred to as the Beidou-3 system) consists of 24 satellites in medium earth orbit, 3 satellites in geostationary orbit and 3 satellites in inclined geosynchronous orbit, a total of 30 satellites.

2. The BDS-3 satellite navigation system provides two service modes, namely open service and authorized service. The open service is to provide positioning, speed measurement and timing services free of charge in the service area, with a positioning accuracy of 10 meters, a timing accuracy of 50 nanoseconds, and a speed measurement accuracy of meters and seconds. The authorization service is to provide more secure positioning, speed measurement, timing and communication services to authorized users, as well as system integrity and slag compatibility information.

Yes, the first and second Beidou navigation test satellites were successfully launched on October 31 and December 21, 2000 respectively, and the two satellites formed the Beidou navigation satellite test system, making China the third country in the world with independent satellite navigation systems after the United States and Russia, breaking the passive situation of relying on foreign navigation and positioning technology.

It has greatly promoted the construction of China's spatial information infrastructure, and has made important contributions to national defense construction and national economic construction, especially in the 2008 Wenchuan rescue has played an irreplaceable role.

Make it yourself, of course. But don't think so badly of foreign countries. They're not going to get to this point.

Many core processors still have to be purchased, and China's technological research and development strength has not reached such a high height.