Positioning-frequency-adaptive centimeter-level high-precision positioning method and positioning-frequency-adaptive centimeter-level high-precision positioning system

Abstract

The invention discloses a centimeter-level high-precision positioning method and a centimeter-level high-precision positioning system with self-adaptive positioning frequency. The positioning method comprises the following steps: 1, performing coarse position positioning of a global positioning system based on a thousand-seeking positioning module, and obtaining current coarse positioning data; 2, uploading the coarse positioning data to a thousand-seeking server, and obtaining a differential correction number of the coarse positioning data from the thousand-seeking server; and 3, calculating centimeter-level position information by using a network RTK (Real Time Kinematic) algorithm according to the coarse positioning data and the differential correction number. 4, regularly executing the steps 1-3 according to the positioning frequency f; after the steps 1-3 are executed for W times, the positioning frequency f is adjusted after each execution; and the value of W is 8-16. The positioning frequency is dynamically adjusted according to the self displacement condition; as enough positioning precision can be provided only with high frequency when the target moves at a high speed, and enough positioning precision can be provided with low frequency when the target moves at a low speed.

Description

technical field [0001] The invention belongs to the technical field of Internet of Things communication and positioning, and mainly relates to a centimeter-level high-precision positioning module based on the positioning frequency self-adaptation of Qianxun location service. Background technique [0002] Many current applications require the support of precise positioning technology, such as smart phones, car navigation, wearable devices and other terminals. Satellite positioning in the traditional sense generally receives satellite signals directly through a receiver, and obtains position information through some complex positioning algorithms. In fact, satellites will be interfered by many factors when they work, such as refraction when satellite signals pass through the earth's troposphere and ionosphere, and reflections when they propagate to buildings, which will lead to errors in the calculation of signal propagation time, and then bring The distance calculation is wr...

AI Technical Summary

Problems solved by technology

However, Qianxun service needs to be connected to the Internet to obtain positioning error calibration data. For some unmanned applications, it is often impossible to effectively obtain accurate positions.

[0004] For commonly used positioning systems, high-frequency positioning consumes a lot of power, and it is often difficult to work for a long time when powered by batteries

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