The Economic Observer newspaper reporter in benefits such as "This year China will launch 6-8 Three Beidou navigation satellite, by the end of 2020 to fully complete the construction of the Beidou system III." The end of May held its tenth annual meeting of Compass came the news.
May 17 night, our Xichang Satellite Launch Center Long March 3C, an arrow in a satellite orbit indirect manner, 45 Beidou satellite launch. Satellite navigation and location-based services industry also will be towards a new stage of development.
In May this year, independent research chip become the most discussed topic nationwide. With the convening of the annual meeting of the Big Dipper, "Compass key chip" once again become a hot topic.
During the annual meeting of the Big Dipper, Guangzhou Haida satellite navigation technology Co., Ltd. (300177.SZ, hereinafter referred to as "Haida") announced the "Global Precision" Hi-RTP system service industry cooperation was officially launched. As the company's pioneering technology infrastructure design and application of Compass, the system not only can be achieved under the conditions without having to set up the base station at any time on a global scale, real-time high-precision positioning anywhere, can achieve centimeter, decimeter and positioning three different levels of sub-meter service.
Haida Liao Dinghai chairman and president, said in Haida has roots in the Beidou satellite navigation industry, with the development of Beidou industry, Haida "Global Precision" Hi-RTP system came into being, the precision applied to more public areas of application , boosting the Compass technology "along the way" along the country coverage and promotion, accelerate the pace of internationalization of the Big Dipper.
Three years sword
For Baozhi Xiong and his team, the at 12:20 on April 4, 2019 is a special moment. At that moment, with iRTK5X (intelligent measurement system) to measure the first satellite signal fixed solution. "This means that we can 'global precision' Hi-RTP system technology verification services have all gone through, you can start the actual measurement, the system can be applied in the future in many areas autopilot, unmanned aerial vehicles, marine surveying and mapping . "
Baozhi Xiong is a subsidiary of Haida - general manager of Guangzhou Haida Surveying Instruments Co., Ltd., the total person responsible for "global precision" Hi-RTP service system.
According Baozhi Xiong, the "global accuracy" Hi-RTP service system is a global coverage with high precision GNSS positioning SBAS system, including the network of ground reference stations, data processing center, implantation station ground, L-band communications satellite and The user terminal five parts.
"In fact, Hi-RTP system is similar to a mobile communication system we are using, terminal devices like mobile phones, equivalent to a reference station tower, but Hi-RTP systems provide a high-precision positioning service. We used to do precision position, more rely on terrestrial communications network to transmit differential data, and then high-precision positioning, but in remote areas of Xinjiang and Tibet, in some places there is no communication network is difficult to carry out surveying, but the use of broadcast satellites in geosynchronous orbit, we can not only seamless high-precision positioning in urban, rural, and even in the no man's land and other places. "Baozhi Xiong said.
The idea put forward from 2015, to April 4, 2019 for the first time to receive satellite signals fixed solution, "Global precision" Hi-RTP serve the entire project lasted more than three years.
Baozhi Xiong told the Economic Observer newspaper reporters, the whole process the greatest feeling is unknown and challenges. "During the system to do this, technically we may probably know, but what use satellite data in what format, how to upload the satellite signal, down from the beginning we did not know, not much literature in this area, entirely on its own a little bit of groping. "
As a commercial real-time precision positioning service system, at present, Hi-RTP system already has the ability to service the Asia-Pacific satellite broadcast (network model can achieve global coverage), the future will gradually realize the L-band communications satellite global coverage. That is, the user may receive information on the number of corrections by the L-band communications satellite or the Internet, stand-alone real-time positioning operation.
Since May 1 this year, L-band communications satellite Hi-RTP service system has officially begun renting, the national service system has been measured. From the measured results, in line with expectations. Currently, equipped with the system iRTK5X products have been put to work with multiple measurements along the Sichuan-Tibet railway and other measurements in use.
Spanning from the meter to the centimeter level
For a long time, in the application development process satellite navigation and positioning system, the US GPS system to occupy the world's leading market position. China's satellite navigation and positioning industry started in the 1980s. In 2006, China announced the construction of a new generation Beidou satellite navigation and positioning system.
Currently, the global satellite navigation and positioning industry entered a coexistence of multiple systems, multi-technology integration of the new stage of development. Operational satellite navigation and positioning systems include: GPS system, GLONASS system, Galileo system and China's Beidou satellite navigation and positioning system.
Publicly available data, the current GPS positioning accuracy is 2.2 m. Baozhi Xiong introduced in the system with Hi-RTP, III Compass navigation accuracy will be possible centimeter. "From the level meters to centimeters across, it would be a qualitative improvement."
Baozhi Xiong said that compared with a conventional foundation enhancement system, Hi-RTP has four major advantages. First, may cover anywhere in the world; second, may be simultaneously broadcast corrections by L-band communications satellite and the Internet in two ways, the user may select access to the actual situation, more flexible; third, i.e. without erecting base station can be achieved at any time on a global scale, real-time high-precision positioning anywhere; fourth, can provide three different levels of centimeter, decimeter and sub-meter positioning service.
"This is our service system to meet the real-time industrial applications, large-scale, high-precision positioning requirements and launched a high-accuracy location-based services not only can be used for high-precision mapping geographic information field, but also used in more areas . "Baozhi Xiong said, no base station, no need to move the communication network, with the support of the system, no one tractor can quickly and orderly work in the fields, oil drilling in the desert no man's land can be smart under the monitoring system control, high precision directional drilling, unmanned vehicles can transport cargo in Park street, shuttle personnel.
The Economic Observer newspaper reporter access to public information found in Haida, construction Haida Hi-RTP location-based services system will be divided into three steps. Now in the third stage, we have 150 global reference station construction.
The next two years, we plan to achieve positioning accuracy of the global range of 4 cm, 2 cm in key areas, and to achieve L-band satellite broadcast and the Internet at the same time, global reference station will reach 220.
Beijing University of Aeronautics and Astronautics School Dean Compass Silk King Kwai Fei said, "Global precision" Hi-RTP has a broad market prospect in a non-mapping industry, including but not limited to, autopilot, precision agriculture, disaster monitoring, smart grid, financial medical and other areas of people's livelihood, especially in the field of application of unmanned work area and offshore positioning network signals can not be covered, due to the lack of good precision positioning means, "global precision" Hi-RTP unique. "The traditional mapping market is relatively small, and the application has matured, and therefore non-mapping industry is an important direction for Hi-RTP expansion of 'global precision'."
King Kwai Fei believes that non-mapping industry but also to Haida "Global Precision" Hi-RTP challenges. "As the surveying and mapping industry enterprise, the demand for non-Haida mapping industry users, spending habits, culture and policies do not necessarily understand, this means that the product is more difficult to impress new users." Shenyang hospital treatment of leukoplakia: http: // mobile.rizkam.com/
In this regard, King Kwai Fei suggested that the Haida urgent need to do two things: bundled with the user, to do well. "Through deep into first-line non-mapping industry, listen to their opinions and understanding of the needs of users, according to local conditions in order to develop 'global precision' Hi-RTP solution. In addition, by creating a representative of the industry application case, a product demonstration driving effect. "