High-precision positioning method based on seamless fusion of BDS satellite-based and ground-based augmentation system
A technology of a satellite-based augmentation system and a ground-based augmentation system, which is applied in satellite radio beacon positioning systems, radio wave measurement systems, measurement devices, etc., can solve problems such as the inability to use ground local differential technology, and achieve the effect of assisting rapid convergence
Pending Publication Date: 2021-04-30
CHAOYANG POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY +2
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[0038] The specific embodiments provided by the present invention will be described in detail below in conjunction with the accompanying drawings.
[0039] Such as figure 1 As shown, a high-precision positioning method based on the seamless fusion of the BDS satellite-based augmentation system, simultaneously runs the positioning algorithms of the satellite-based augmentation system and the ground-based augmentation system, and the BDS receiver with the function of seamless fusion of the satellite-based augmentation system integrates the two When the two data match and the positioning accuracy is highly consistent, it will be output directly; when there is a difference between the two data, but within a certain threshold, the best output will be selected according to the signal strength and positioning accuracy of the two; when the two data When the difference is large, interrupt or re-run the unreasonable augmentation system positioning algorithm, and re-comparison, if the di...
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A high-precision positioning method based on seamless fusion of BDS satellite-based and ground-based augmentation system comprises: operating positioning algorithms of a satellite-based augmentation system and a ground-based augmentation system at the same time, a BDS receiver with a satellite-based seamless fusion function comparing positioning information of the satellite-based augmentation system and the ground-based augmentation system, and when data of the satellite-based augmentation system and the ground-based augmentation system are matched and highly consistent, directing outputting the data; when the two data are different, preferentially outputting the two data according to the signal intensity and the positioning precision of the two data within a set threshold value; and when the data difference between the satellite-based augmentation system and the ground-based augmentation system is greater than any positioning precision of the satellite-based augmentation system and the ground-based augmentation system, interrupting or rerunning an unreasonable augmentation system positioning algorithm, performing comparison again, and if the difference is still greater than any positioning precision of the satellite-based augmentation system, outputting positioning information of the satellite-based augmentation system. The satellite-based augmentation system and the ground-based augmentation system can be fused, seamless transition between a satellite-based augmentation mode and a ground-based augmentation mode is achieved, and stable high-precision positioning is kept.
Description
technical field [0001] The invention relates to the technical field of Beidou high-precision positioning methods, in particular to a high-precision positioning method based on seamless fusion of BDS satellite-based augmentation systems. Background technique [0002] 1. BDS (BeiDou Navigation Satellite System) [0003] The Beidou system has my country's independent intellectual property rights and can provide users with high-precision positioning services. It uses GEO satellites to broadcast precise single-point positioning signals. It has dynamic decimeter-level and static centimeter-level precision positioning service capabilities. [0004] 2. Ground-Based Augmentation System (GBAS) [0005] Ground-based augmentation systems complement satellite navigation systems. The satellite navigation system can calculate its location when the receiving device receives 4 or more navigation satellite signals, but the accuracy of this positioning method is about 10m. In order to impro...
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IPC IPC(8): G01S19/41
CPCG01S19/41
Inventor 胡博顾洪群李广野温鑫张佳鑫蔡利峰张艳华刘育博姜博宇徐静张琦曲衷正刘恬恬赵琰王东来薄文黄钰
Owner CHAOYANG POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY