Multi-satellite communication time difference positioning data fusion processing method

Abstract

A multi-satellite communication time difference positioning data fusion processing method disclosed by the invention is high in time difference positioning speed and high in precision. According to the technical scheme, after multi-satellite communication radiation source time difference positioning data are obtained, all positioning points are classified according to target numbers through a mirror image point elimination module, mirror image points in a positioning point classification result are eliminated through a mirror image point elimination algorithm, and non-mirror image points are output to a positioning point aggregation module; a normal point aggregation module performs trace point aggregation according to a trace point aggregation algorithm to generate aggregation points, and outputs the aggregation points to an outlier point elimination module; the outlier point elimination module performs outlier point elimination according to an outlier elimination algorithm, and outputs non-outlier points to an aggregation point filtering module; and the aggregation point filtering module filters the aggregation point traces based on an aggregation point filtering algorithm, performs fusion processing by using a covariance intersection algorithm and a k-nearest neighbor sliding window least square algorithm, and generates a final fusion result.

Description

technical field [0001] The invention belongs to the target tracking technology in the technical field of target point-track fusion, and mainly relates to a point-track data fusion method in a maneuvering target real-time monitoring system, in particular to a fusion method of multi-satellite communication time-difference positioning data with large errors. Background technique [0002] With the development of multi-platform communication technology and the progress of time difference measurement technology, time difference measurement technology has become the main positioning method in modern positioning. In terms of the number of satellites, satellite positioning technology includes dual-satellite time difference and frequency difference joint positioning, three-star time difference single positioning, multi-satellite time difference single positioning and multi-satellite time difference and frequency difference joint positioning and so on. Double-star joint positioning nee...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of accurate fusion of large noise point traces, the present invention provides a time difference positioning speed, high precision, strong anti-interference fusion ability and strong robustness, can significantly improve the fusion accuracy, and has many large errors. Fusion processing method of satellite communication time difference positioning data

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