Research on weighted carrier phase three difference precision velocity measurement method based on BDS / GPS integrated system

Kangkai Liang; Chenglin Cai

doi:10.54097/hset.v56i.10814

Authors

Kangkai Liang
Chenglin Cai

DOI:

https://doi.org/10.54097/hset.v56i.10814

Keywords:

BDS / GPS, integrated system, weighted carrier phase.

Abstract

Aiming at the problem of velocity measurement accuracy in single system carrier phase differential velocity measurement and the possible cycle slip in the process, a carrier phase three difference method is proposed to further improve the velocity measurement accuracy. The use of carrier phase triple difference positioning has been very mature, but there is not much research in velocity measurement. Therefore, this paper uses carrier phase triple difference for velocity measurement. At the same time, in order to improve the cycle slip problem in the process, an integral Doppler double difference combined with carrier phase triple difference is proposed, and then a method to improve the cycle slip based on weight is obtained. Both static and dynamic tests show that the carrier phase triple difference method can improve the speed measurement accuracy, and the weighted carrier phase triple difference method can improve the cycle slip.

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