Does BDS 3 have the performance that other satellite navigation systems do not have?

1. Since the "Beidou-1" positioning terminal is an active terminal, the positioning process emits electromagnetic signals, which immediately exposes the user's position. ”。The GPS terminal in the United States is a passive listener, which is very safe and discreet to use.

2. Since the "Beidou-1" positioning terminal is a two-way communication when it is used, the positioning information is transmitted back to the positioning terminal by the ground control station, and the time is extended (seconds), which cannot be applied to sonic flight equipment, such as missiles and fighters. The GPS terminal in the United States calculates the positioning information at the terminal, and the reaction time is only related to the computing speed of the terminal (milliseconds), which can be applied even to high-subsonic cruise missiles.

3. Because the positioning process of "Beidou No. 1" requires communication between the ground control center and the positioning terminal, limited by the channel, and the number of terminals serving at the same time is limited (100 units), large-scale application on the battlefield becomes impossible. The working principle of GPS in the United States is passive positioning and decentralized computing, so there is no channel bottleneck, and there is no limit on the number of terminals for military and civilian use.

4. In wartime, the "Beidou-1" system is very easy to be blocked and cannot play a role. As long as the enemy transmits the signal transmitted by the detected positioning terminal with high density and retransmission, it will create the illusion that countless positioning terminals are applying for services at the same time, blocking the limited channel, and making the real positioning terminal unable to work or slow down the response.

5. Due to the need for a launch unit at the "Beidou-1" positioning terminal, the split is high, the use conditions are restricted, and the possibility of single soldier and single application is low, mainly for vehicle and shipborne applications.

6. If the ground control station is "hard killed" in wartime, or suppressed by electromagnetism, or destroyed internally, the whole system will be "completely wasted".

From the perspective of the computer system structure, "Beidou-1" is the master (ground control center) - slave (positioning terminal) architecture, the above shortcomings are caused by the master-slave architecture, the architecture is not suitable for the war environment at all, only the distributed architecture in the war environment is the most survivable, like the Internet emphasizes the point-point communication capability, the Internet work station on the communication layer is equal, there is no master, slave division. The GPS positioning system of the United States is also a distributed system, the positioning terminal works independently, and the 24 GPS satellites only play the role of reference system, and have no control role.

The first reason is that the Beidou system has just been born, and its position in the market is definitely not as good as GPS, which has been developed for more than ten years. In fact, the original intention of the GPS system was to serve the US military, so its function is very powerful, and after more than ten years of improvement, it can now be called the world's top navigation system.

The second reason is that people are used to the GPS system and don't know much about the sudden appearance of Beidou, so no user will try it rashly. I believe that most people's mobile phones still support the GPS system, because Beidou has not yet been fully popularized, and its popularity is not as high as GPS. The third reason is that the Beidou system has not really been recognized by people.

This is actually a problem that arises with every new technology, because people's first reaction to an unknown thing is resistance and worry. However, this problem will gradually disappear with the development of time, and I believe that Beidou will soon be accepted by people!

The full name of Beidou-3 is the Beidou-3 global satellite navigation system.

It is composed of 24 satellites in medium earth orbit, three satellites in geostationary orbit and three satellites in inclined geosynchronous orbit, a total of 30 satellites.

Beidou-3 satellite.

The system has two service modes: open service and authorized service. The open service provides positioning and speed testing for users in the service area.

Three types of timing services, positioning accuracy.

It is 10m. The timing accuracy is 50 nanoseconds. The accuracy of the speed measurement is per second. The authorized service also provides three types of services: positioning, speed measurement, and timing, but its service is more secure and has better system integrity.

Second, the anti-blocking ability is stronger. Especially at lower latitudes, its performance benefits are even more obvious. The Beidou system provides navigation signals at multiple frequencies, and the signals of multiple frequencies are combined to make navigation more accurate.

The Beidou system also integrates navigation and communication capabilities, and has a variety of service capabilities such as satellite-based augmentation, ground-based augmentation, precision single-point positioning, short message communication, and international search and rescue.

Beidou navigation system. It has been used in all walks of life in China, such as transportation. Agriculture, forestry, animal husbandry and fishery, power and energy.

and other traditional industries. At that time, the Beidou system also had China's emerging industries, speeding up people. For example, next-generation communications, blockchain, artificial intelligence.

IT systems have also given rise to a number of new products. For example, based on the Beidou-3. 22nm process, RF, mechatronics.

Navigation and positioning chip. He has both small size. It is characterized by low root number and high precision. In addition, the Beidou system is also applied to some more specific operations. Enemies.

I estimate the confirmation of land rights.

Spiritual agriculture, digital construction. Smart Ports. In addition, the Beidou system and its application to China's high-speed rail construction industry.

On the whole, China's Beidou navigation system has significant advantages such as strong signal, accurate positioning, multi-frequency combination, anti-interference, and strong anti-blocking ability. It has been widely used in all walks of life and people's daily life in China. China's Beidou navigation system has also been applied to countries around the world.

Because the Beidou satellite has not only established the latest satellite navigation system for China, but also provided convenience for the work and travel of people from all walks of life in China.

This is because Beidou technology is developing very rapidly, and it has also been used in many fields, and the signal is also very strong, and it has also brought great benefits to people, and Beidou has also been used in a lot of navigation software.

Because Beidou has developed a lot of satellites, and these satellites are very helpful to our country, and the information provided is very accurate.

China's Beidou Satellite Navigation System.

It is a global satellite Huilu navigation system developed by China.

It is also the third mature satellite navigation system after GPS and GLONASS. Beidou satellites also play a very big role in life.

First, the aspect of daily life.

Our daily life navigation and positioning are inseparable from Beidou navigation, users can not only achieve accurate positioning, but also get real-time road conditions while driving, and carry out optimal route planning; For some ride-hailing.

will determine the ride according to the route determined by the navigation**; And we can see on the web according to the navigation where the purchased express arrives; For those who take the bus on a daily basis, it is possible to check the location ...... of the bus according to the navigation system

Second, engineering construction.

Not long ago, Shanghai Yangshan Deepwater Port.

The "5G+L4 intelligent driving heavy truck" launched has realized one-time accurate parking and automatic queue driving at close range, which has improved Yangshan Port.

Intelligent transfer efficiency and the East China Sea Bridge.

Driving ability. These intelligent heavy trucks are based on the precise positioning of navigation, so as to achieve accurate parking and queue driving. It is also of great help to highway construction, which can reduce the pressure and intensity of highway engineering construction survey work, and improve the efficiency ......of engineering construction

Third, agriculture and animal husbandry.

Nowadays, grazing is no longer the same as in the past, where people follow the livestock around, and only need to install a chip on the ear of each cow, and the Beidou satellite can be used to see the location of each cow at any time. In this way, the manpower and time of herding cattle will be greatly saved. For growers to spray pesticides, it is also the beginning of the use of drones to spray pesticides, drones according to the positioning system of Beidou navigation, can ensure that pesticides are sprayed on every piece of land, to a large extent to save manpower and time ......

The establishment of Beidou navigation has facilitated people's lives to a great extent, and the navigation system is in all aspects of daily life, and now people are more and more dependent on the navigation system, and the navigation system will bring us unexpected surprises in the near future.

According to the Voice of China "News Evening Peak" of ** Radio and Television Station, at 10:30 a.m. on July 31, the completion and opening ceremony of the Beidou-3 global satellite navigation system was held in the Great Hall of the People, marking the official completion of China's independent construction and operation of the global satellite navigation system. When it comes to the Beidou system, as a Chinese, we will inevitably be very proud, because the Beidou system is China's largest and most extensive space system with the widest coverage, the highest service performance, and the most closely related to people's lives. Of course, this is also the most effective system for us to establish national self-regulatory protection.

It can be said that it is an indispensable existence in the development and growth of our country.

The navigation and positioning function is the trump card function of the Beidou satellite system, and it is also the most basic function. For example, in agricultural production, those mechanized equipment are completed through the Beidou satellite navigation system. Under the navigation and positioning of Beidou, our agricultural machinery operation has reached the centimeter-level operation effect.

In addition, there is a position reporting function that is combined with two geosynchronous satellites through radio determination, and search and rescue can be carried outIn addition, Beidou can also monitor the advent of some geological disasters with high precision.

With the launch of the 55th satellite of the Beidou Navigation Satellite System, it is also the last networking satellite, marking the completion of the Beidou Navigation Satellite System, so this matter is widely concerned. Regarding the characteristics and functions of Beidou-3, Beidou-3 commander-in-chief Chi Jun introduced that the last satellite is the most powerful, the most frequency band, and the most complex satellite in Beidou-3.

The completion of the Beidou Navigation Satellite System can not only provide convenience for China, but also make more contributions to the world. The completion of the navigation system can also be widely used in other countries, so that people in more countries can connect together and have a good development.

The specific role of the Beidou-3 global satellite navigation system is military and civilian, the military can help the guided missile better hit the target, and the civilian is the daily navigation to help people find their destination!

Beidou has roughly similar functions to GPS, that is, positioning and navigation, and also plays a huge role in transportation, and is also applicable to agriculture and unmanned driving.

It is mainly used for land, sea and air navigation and positioning, and provides two service modes: open service and authorized service. In agriculture, sowing is labor-saving, seedlings are produced without worry, and labor productivity has been greatly improved.