Solve the pain points of traditional satellite positioning system
Beidou navigation "leads the way", positioning success rate exceeds 95% in complex environment
Our reporter Long Yuemei
"Thanks to the Beidou navigation system is a satellite navigation system independently developed by China, Guangzhou Haige Communication Group Co., Ltd. (hereinafter referred to as Haige Communication) through independent innovation and development, in a complex environment, the positioning success rate from the original 70% Increased to more than 95%. "Recently, the first accomplishment of the 2019 Guangdong Science and Technology Progress Award first prize project" Research and Industrialization of Beidou Navigation Innovation Technology for Complex Electromagnetic Environment "(hereinafter referred to as the Beidou Innovation Project) Tian Zhenhua, director of grid communication, said.
Mass consumption has been applied on a large scale
Last year, at the 10th China Satellite Navigation Annual Conference, the head of China Satellite Navigation System Management Office announced at the meeting: Beidou has formed a complete industrial chain consisting of basic products, application terminals, application systems and operational services, which has The industry and key areas are standard for use, and large-scale applications in the mass consumer field.
This year is the ending year of China's Beidou navigation system global networking. Recently, the 54th Beidou navigation satellite successfully set its point, reached working orbit, and entered the satellite long-term operation management mode.
In addition, the last global networking satellite of Beidou-3 arrived at the Xichang Space Launch Site of Xichang Satellite Launch Center on April 4, marking the final stage of the Beidou global constellation networking. This is China's 55th Beidou navigation satellite, which is scheduled for launch in May.
In 2020, the deployment of the Beidou-3 global constellation will be fully completed. By then, automotive intelligence, precision agriculture, smart cities, surveying and mapping and other industries will have a large number of applications for Beidou related products. At the same time, a large number of daily applications including consumer phones will also Will be fully launched, the Beidou industry has broad prospects.
Fully receive navigation signals to complete positioning
Haiger Communication's Beidou innovation project is a typical case of Beidou navigation in the mass consumer field.
Traditional satellite positioning systems, such as GPS systems, have higher positioning accuracy in open outdoor environments, but are subject to weak satellite signals and are easily blocked or interfered, resulting in inaccurate positioning in complex urban environments and electromagnetic environments. The problem.
"Under the circumstances of the city's tall buildings, narrow streets, and many communication base stations, the inability to accurately sense the precise location has become a pain point for many users." Tian Zhenhua said.
It is understood that the main difficulty of the Beidou innovation project is to allow Beidou navigation products to complete positioning solutions stably and reliably, and to complete the chiping of circuits and algorithms in a variety of space environments, electromagnetic environments, dynamic environments, and temperature environments.
"Simply put, we need to eliminate all kinds of interference signals as much as possible, and fully receive the available navigation signals to complete the satellite positioning solution." Tian Zhenhua said, based on years of technical accumulation, the Beidou Innovation Project team classified the application environment by Modeling, signal and information processing algorithm simulation, integrated multi-source information fusion, anti-jamming, anti-multipath, high precision, high dynamics and other key technologies, solidified the circuit and algorithm software into Beidou RF and baseband chips, and finally chip Based on the completion of product development and promotion and application.
"In the course of 8 years of research and development, the team has been testing the footprints of large rivers, north and south, thousands of miles, and 10,000 meters in the sky for the stability and reliability of products and technology. The scientific research team of more than 100 people has overcome all kinds of difficulties and has also achieved fruitful results." Tian Zhen Hua said.
Realize dynamic supervision of operating vehicles
The "Beidou Satellite Navigation System Construction and Development" report pointed out that as of April 2019, there were more than 6.2 million operating vehicles, 30,000 postal and courier vehicles, about 80,000 buses in 36 cities, and more than 3,200 inland navigation Facilities, more than 2,900 maritime navigation facilities, the Beidou system has been applied. China has built the world's largest dynamic monitoring system for operating vehicles, which has effectively improved management efficiency and road transportation safety.
As the earliest batch of Beidou civil large-scale application projects in China, Haiger Communication independently developed the Beidou official vehicle management information system. Based on Beidou's high-precision positioning, it established a big data operation management platform for official vehicles, and realized scientific vehicle scheduling. At present, more than 30,000 sets of official car Beidou terminals have been installed in 15 cities including Guangzhou and Shenzhen.
Tian Zhenhua said that at present, the technology of the Beidou Innovation Project has been widely used in the Beidou Demonstration Project and important departments of the national economy. It has demonstrated excellent performance in various complex environmental applications and laid a good foundation for the application development of Beidou No.3.
In addition, this technology has also been successfully applied to the national major demonstration project "Beidou City Application Demonstration Project in Guangzhou Nansha New District" approved by the China Satellite Navigation System Management Office. It has demonstrated excellent performance in various complex environmental applications. Used in the first high-precision automated terminal in Nansha Port, Guangzhou.
"During the New Coronary Pneumonia epidemic, as the first batch of enterprises to resume production in Guangzhou, we took advantage of Beidou's technological advantages to quickly upgrade and develop the Beidou Smart Epidemic Prevention Positioning Service System to help science and technology epidemic prevention." Tian Zhenhua said.
In 2018, Haige Communication was approved for the special development project of the Beidou Industrial Park within the central budget investment plan, and received 85.57 million yuan of investment support from the central budget. The construction content of the project is the construction of Beidou high-precision intelligent comprehensive service system.
Tian Zhenhua said: "We are confident that we will continue to be the pioneer of the application of the Beidou field, accelerate the transformation of the key achievements of the Beidou + industrial upgrade, continue to spawn more new industries and new formats in the Beidou field, and help realize the large-scale application of Beidou . "