﻿ 一种基于相频函数关系的双基时差定位方法

# 一种基于相频函数关系的双基时差定位方法A Double Station Time Difference Location Method Based on Function Relationship between Phase Shift and Doppler Shift

Abstract:
This paper presents a location algorithm which can help to improve existing performance of multistation time difference location based on the function relationship among phase shift, Doppler shift and time difference. New method uses the relationship between phase difference and time difference based on the function transforms from Doppler shift into phase shift. Finally, the ranging formula that only can apply to airborne platform can be translated into the double station time difference location method which is not associated with the motion state of detection platform. As compared to existing three stations time difference location method in two-dimension plane, the double station time difference location method can heighten measurement accuracy and avoid the time difference ambiguity introduced by high PRF signal. At the same time, it also has the characteristics that the time reference between two major base stations can be deranged, and that looking for the building position of base station is more convenient. Simulation result proves the availability of the algorithm.

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