Satellite navigation locating method and receiver

Abstract

The embodiment of the invention provides a satellite navigation locating method and a receiver. The satellite navigation locating method comprises the following steps of: at different times within a preset satellite launching signal time error range, obtaining position information of at least five satellites and a pseudo-range between each satellite and the receiver; according to the position information and the pseudo-range, solving clock deviations of a receiver clock at different times with a global locating system GPS time and a position of the receiver; and solving a residual error of each satellite at different times, and carrying out comparison, wherein the position of the receiver corresponding to the minimum residual error is a locating position of the receiver, and the residual error is a difference of an actual distance and the pseudo-range between the receiver and each satellite. The embodiment of the invention realizes that a more accurate receiver position is finally determined depending on the position information of each satellite and a relative time of a satellite launching signal in an environment with weaker signal strength such as indoor environment and the like and realizes receiver location.

Description

technical field [0001] The invention relates to the technical field of satellite-based navigation, in particular to a satellite navigation and positioning method and receiver. Background technique [0002] The satellite-based navigation and positioning system especially involves the positioning of the ground receiver system based on the mobile communication auxiliary mode. The system mainly includes GPS (Global Positioning Systems, Global Positioning System), Galileo system and the Beidou positioning system that China is networking. [0003] The positioning function of the mobile communication system is very important to people's life. Under the impetus of the Federal Communications Commission of the United States, the positioning technology of the cellular network is developing rapidly. At present, the goal of the first phase of the committee has been achieved, and it is being rapidly promoted in many places around the world. Further improvement of accuracy is the main goal...

AI Technical Summary

Problems solved by technology

[0005] However, since the strength of the satellite transmission signal will be greatly attenuated by the influence of buildings, in places with weak signal strength such as indoors, the navigation data and time information cannot be directly extracted from the satellite broadcast, and the receiver cannot be positioned.

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