Beidou Satellite Navigation System for Civil Application
Beidou satellite navigation system, referred to as Beidou system, can provide global users with all-weather, all-day, high-precision positioning, navigation and timing services. There are three generations of the Beidou system. The Beidou system since the second generation is officially called the “Beidou Satellite Navigation System.” The Beidou-3 system has completed the launch of the last satellite on July 31, 2020, forming a global precision navigation system.
Beidou Satellite Navigation System (BDS), US Global Positioning System (GPS), Russian Global Navigation Satellite System (GLONASS) and EU Galileo Positioning System (Galileo) are the four core suppliers of global satellite navigation systems recognized by the United Nations Satellite Navigation Commission.
The application of Beidou system is not only navigation, mobile phone positioning, electronic map, but will be more widely related to intelligent industry and space-time information. Because it can provide location and time information, satellite navigation technology will inevitably be integrated into all smart industries such as smart networks and smart sensors, forming Beidou + 5G, Beidou + blockchain and other information technology methods, resulting in a variety of unprecedented new production , work style, lifestyle, economic model, and better benefit the society.
Agriculture
When the Beidou system is used in agriculture, on the one hand, it can realize remote management and precise operation of agricultural machinery, which not only reduces labor, but also accurately calculates the frequency, location and route of mechanical operations (seeding, fertilizing, and harvesting). On the other hand, it can also improve the accuracy of fertilizers, pesticides, etc., accurately adjust humidity and predict crop growth cycles, which saves costs, reduces pollution, and can greatly increase yields.
A rough estimate is that the combination of the Beidou system and smart 5G can reduce the average cost of agricultural production by 15%, and the average increase in production can reach 10%. Moreover, with the further integration of the Beidou-3 system with artificial intelligence and the network, the future production efficiency and effect will be higher.
Internet of Things (IoT)
The Beidou system is even more useful for the construction of smart cities and smart rural areas. It can be used as an important part of the Internet of Things and applied to the perception and network levels.
Strong Anti-interference ability
Users all over the world have an additional choice of positioning system, both GPS and Beidou. Usually the two systems are used together. When one system fails, the other can be used as a supplement. The stability and reliability are greatly improved. The price of satellite navigation receivers and other related devices based on China’s self-designed chips has been greatly reduced. By the end of 2019, the sales of basic products such as domestic Beidou navigation chips and modules have exceeded 100 million. In the future, we will see more products using Beidou technology.
Accurate Positioning
High positioning accuracy is a major advantage of the Beidou system. Due to the increase in the number of satellites and the ground enhancement system, the positioning capability in the Asia-Pacific region has been improved to the static centimeter level and dynamic decimeter level.
Beidou satellite navigation technology combined with remote sensing, geographic information and other technologies has accelerated the development of traditional agriculture to smart agricultural agriculture, significantly reducing production costs, increasing labor productivity, and increasing labor income.
Applications including farmland information collection, soil nutrient and distribution investigation, crop fertilization, crop disease and insect pest control, special crop planting area monitoring.
Applications such as non-human driving agricultural machinery, farmland ridge planting, and drone monitoring and plant protection have a strong demand for high-precision Beidou services.
Natural Disaster Forecasting
In terms of natural disaster forecasting, the Beidou system can accurately determine and issue warnings in time. On the afternoon of July 6, 2020, a landslide occurred in Panping Village, Shimen County, Changde City, Hunan Province, causing more than 1 million cubic meters of landslides. However, because Shimen County received an orange warning for geological disasters from the Beidou satellite monitoring system in advance, 14 households All 33 people were evacuated early, without any casualties.
Large Scale Construction
In large-scale emergency construction, the Beidou system positioning function is applied to field survey and measurement, which can greatly save project construction time. During the epidemic in early 2020, with the help of the high-precision positioning equipment of the Beidou satellite navigation system, the engineers who built the Huoshenshan Hospital were able to complete the measurement tasks quickly and accurately, and completed the construction of a large hospital within a few days. Bought precious time to save lives.
Traffic Operations
Accurate positioning is a prerequisite for refined traffic operations. In Shanghai Yangshan port area, a batch of 5G heavy trucks that realize automatic driving can be accurately entered into the narrow storage space with the help of Beidou’s high-precision positioning technology. Only 1% of experienced drivers in manual operations can achieve this level. At the same time, intelligent heavy trucks can achieve centimeter-level positioning during automatic driving, and the error during parking loading and unloading can reach ±3 cm, which is more accurate than the technical requirements of Yangshan Port which is less than ±5 cm. The efficiency of single-point loading and unloading operations will increase by 10%.
Cities such as Chongqing and Zhengzhou use Beidou positioning in the public transportation system which allows them to accurately grasp vehicle location information and movement trajectory in real time, so as to predict the needs of users in advance and quickly make vehicle management and dispatch responses.
As of the end of 2019, China had more than 6.5 million operating vehicles, 30,000 postal and express delivery vehicles, about 80,000 buses in 36 central cities, more than 3,200 inland navigation facilities, and more than 2,900 maritime navigation facilities using Beidou system. It allows the transportation field to combine smart technologies such as big data and cloud computing to achieve more scientific and reasonable management and improve production efficiency.
For smart cities, huge changes have been evolving in precision agriculture, artificial intelligence, aerospace and maritime affairs.
Text messaging
Text message communication has become Beidou’s unique ability to send information that has increased from 120 Chinese characters at a time to 1,200 Chinese characters at a time, and the communication bandwidth has also increased from 500,000 users to 5 million users. Two-way communication can be achieved with users-users, users and the central control system. This feature has been favored by many fields, and practical applications have already begun.
Forestry
Forestry is one of the earlier applications of the Beidou system. Forestry management departments use the Beidou application to conduct forestry resource inventory, forest land management and inspections, which greatly reduces management costs and improves work efficiency. It mainly includes applications such as forest area estimation, wood quantity estimation, rangers patrolling, forest fire prevention, and determination of regional boundaries. Among them, forest inspectors, forest fire prevention department use Beidou’s unique text message sending function.
Fishery
China is a big fishery country, with a marine fishery area of more than 3 million square kilometers, and many fishing boats and people engaged in marine fishery. The Beidou system has played an important role in fishery management. It mainly includes fishing boat navigation, fishery administration supervision, fishing boat entry and exit management, marine disaster warning, fishermen’s text message sending and communication, etc. Especially in sea areas where there is no mobile communication signal, using the Beidou text message sending function, fishermen can report safety to their families through the Beidou terminal, ensuring the safety of fishermen’s lives.
Based on high-precision location services and short message communication, some additional value-added services will be developed. Assuming that Beidou users arrive near a certain place, they can push relevant information within this range to users to achieve value-added services. This function will also make field work, mountaineering, expedition, rescue and other fields more convenient.
Special care – Elderly, Children, Disabled
In recent years, Beidou special group care applications have gradually emerged. Through Beidou system navigation, positioning, text message sending and other functions, provide relevant services for the elderly, children, disabled people and other special groups to ensure safety. It is mainly used in applications such as electronic fences and emergency calls. Among them, the electronic fence enables the relevant people to get out of the set electronic fence range, and the set-up person’s mobile phone can receive timely reminders.
Timing function
The synchronization of power transmission time involves national economic security. The power management department uses the Beidou system’s on-board atomic clock time service function to realize the unified time reference of the entire power grid, power station environmental monitoring, and electric vehicle monitoring applications.
The time synchronization of computer networks in the financial industry involves national politics, economy and people’s livelihood security. By using the Beidou timing function, the financial management department realizes the unified time base of the financial computer network to ensure the safe and stable operation of the financial system.
The Future
In the near future, the unique features of the Beidou system will be highly combined with 5G technology, and will be used in autonomous driving, vehicle supervision, urban parking, airport yards, port loading and unloading, mobile phone positioning, precision agriculture, surveying and mapping, bridge inspection, More applications are realized in many fields such as geological disaster monitoring.
