System and method for calibration , system and method for positioning correction, and positioning system

Abstract

The invention discloses a system and a method for calibration , a system and a method for positioning correction, and a positioning system. The system for calibration comprises a GPS (Global Positioning System) signal receiver and a terminal device, wherein the GPS signal receiver is used for receiving the satellite signals of a plurality of satellites, and the terminal device is used for selecting a satellite signal having a signal-to-noise ratio greater than a standard threshold or a satellite elevation greater than a standard angle from the satellite signals and calibrating the satellite corresponding to the satellite signal having the signal-to-noise ratio greater than the standard threshold or the satellite elevation greater than the standard angle as an observation satellite; the system for positioning correction comprises a GPS signal receiver, a terminal device, a code-phase counter and an information processing unit; the positioning system comprises the system for calibration and the system for positioning correction. The system for calibration has the function of calibrating the observation satellite capable of improving the positioning accuracy, and also is capable of strictly controlling and correcting the satellite signals received by the GPS signal receiver, eliminating a drift error, reducing a drift range and improving the positioning accuracy.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a calibration system and method, a positioning correction system and method, and a positioning system. Background technique [0002] GPS stands for Global Positioning System. Simply put, this is a satellite system consisting of 24 satellites covering the globe. This system can ensure that at any time, any point on the earth can observe four satellites at the same time, so as to ensure that the satellite can collect the latitude, longitude and altitude of the observation point, so as to realize functions such as navigation, positioning, and timing. [0003] The composition of GPS includes the space part, the ground control part and the user equipment part, and the user equipment part is the GPS signal receiver. Its main function is to be able to capture the satellites to be measured selected according to a certain satellite cut-off angle, and track the operation of...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome errors such as the clock error of the satellite and the receiver, atmospheric propagation delay, multipath effect, etc. in the satellite signal received by the GPS signal receiver in the prior art. Affected by satellite broadcast ephemeris errors, the defect of positioning accuracy is greatly reduced. A calibration system and method, a positioning correction system and method, and a positioning system are provided, which have the function of calibrating observation satellites that can improve positioning accuracy, and have the ability to The advantages of strict control and correction of satellite signals received by GPS signal receivers, elimination of drift errors, reduction of drift range and improvement of positioning accuracy

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