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

• Main Authors: LIU Liu, LÜ Zhiwei, YU Xiaodong, WANG Pengxu, YANG Dongsen, ZHANG Lundong, CONG Dianwei
• Format: Article
• Language: zho
• Published: Surveying and Mapping Press 2017-04-01
• Series: Acta Geodaetica et Cartographica Sinica
• Subjects: cycle-slip detection; insensitive cycle-slip; cycle-slip repair; optimization of coefficients; phase geometry-free combinations
• Online Access: http://html.rhhz.net/CHXB/html/2017-4-453.htm
• ISSN: 1001-1595; 1001-1595

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.