Method for determining accurate coordinates of base station with unknown point locations

Abstract

The invention discloses a method for determining accurate coordinates of a base station with unknown point locations. The method comprises the following steps: acquiring at least one CORS account by Qianxun Spatial Intelligence Inc, and carrying out an account availability test; acquiring original observation data and equipment basic information of a base station, and solving rough coordinates ofthe base station by adopting a single-point positioning technology; after obtaining the coordinates of the base station, obtaining the coordinates of a new VRS site on the basis by combining a VRS technology, and subsequently obtaining a high-precision differential observation value sent by the Qianxun Spatial Intelligence Inc according to the newly obtained coordinates of the VRS site; and finally carrying out adjustment calculation together with the observation data of the base station to obtain the accurate coordinates of the base station. According to the scheme, the method does not need to depend on data of a surveying and mapping subjective department and can effectively solve the problem that the high-precision absolute coordinates of the base stations are rapidly solved under the condition that the positions of the base stations are not known, and the method effectively meets the requirement for resolving the accurate coordinates of the multiple reference stations.

Description

technical field [0001] The invention relates to the technical field of positioning, in particular to a method for determining precise coordinates of an unknown point reference station. Background technique [0002] With the rapid development of the global positioning system, GPS, BDS, GLONASS, GAILLEO, QZSS, SBAS and other satellite navigation systems coexist. Satellite navigation and positioning have fully realized from single system positioning to multi-mode combined positioning. And stability has a qualitative leap. High-precision location popular service is the general trend in the future. [0003] At present, the single-point positioning accuracy is 5-8 meters, which cannot meet the positioning accuracy requirements of some industries, such as the lane-level positioning of buses and the positioning of autonomous vehicles. An effective way to improve positioning accuracy is to use differential positioning technology. The premise of differential information acquisition ...

AI Technical Summary

Problems solved by technology

[0004] At present, the precise coordinates of the reference station are mainly obtained through joint measurement with known points and network adjustment calculation, but the known point data is generally surveyed and mapped locally Competent departments, due to some reasons involving high-precision observation data and coordinate confidentiality, it is difficult for users to obtain

[0005]Because the PPP technology can achieve millimeter-level accuracy, some scholars have proposed to use this method to solve the coordinates of the reference station, but this method is not suitable for multi-reference There are certain problems in the station network. The results of using multiple PPP solutions cannot accurately reflect the entire CORS network structure. The PPP solution requires precise ephemeris, and it takes about two weeks to obtain the precise ephemeris, and the real-time performance is not effective. In particular, it will have a very negative impact on the construction of some emergency projects. How to quickly and effectively solve the coordinates of the reference site and apply it to practice is a very important task

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