Real-time Cycle-slip Detection and Repair Algorithm of GNSS Triple-frequency Observations

doi:10.11947/j.AGCS.2017.20160532

Abstract

Abstract: Method of cycle-slip detection based on Geometry-free observation combinations has insensitive cycle-slip. This paper analyzes the principle of cycle-slip detection based on the geometric relationship. Then study the similarities and differences of more than one geometry free phase combinations separately. And study the effect of adding a MW(Melbourne Wübbena) combination. We proposed to select GF(Geometry Free) combinations by cross-sectional area. Finally BeiDou triple-frequency data have been used to validate the conclusion. We conclude that two geometry-free phase combination is the most reasonable choice for the detection of insensitive cycle-slip. And a MW combination can obviously decrease the amounts of insensitive cycle-slip. The optimized algorithm only has 1 insensitive cycle slip, and all detected cycle-slip repaired successfully.

Key words: cycle-slip detection, insensitive cycle-slip, cycle-slip repair, optimization of coefficients, phase geometry-free combinations

CLC Number:

P228.4

LIU Liu, LÜ Zhiwei, YU Xiaodong, WANG Pengxu, YANG Dongsen, ZHANG Lundong, CONG Dianwei. Real-time Cycle-slip Detection and Repair Algorithm of GNSS Triple-frequency Observations[J]. Acta Geodaetica et Cartographica Sinica, 2017, 46(4): 453-459.

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