INS Aided Direct Calculation Algorithm for Single-Epoch Ambiguity Resolution

GAN Yu; SUI Lifen; DONG Ming; LIU Qiankun; CHEN Quanyu

doi:10.13203/j.whugis20140661

Volume 41 Issue 10

Oct. 2016

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Geomatics and Information Science of Wuhan University > 2016 > 41(10): 1379-1384. > DOI: 10.13203/j.whugis20140661

GAN Yu, SUI Lifen, DONG Ming, LIU Qiankun, CHEN Quanyu. INS Aided Direct Calculation Algorithm for Single-Epoch Ambiguity Resolution[J]. Geomatics and Information Science of Wuhan University, 2016, 41(10): 1379-1384. DOI: 10.13203/j.whugis20140661

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INS Aided Direct Calculation Algorithm for Single-Epoch Ambiguity Resolution

1.
School of Surveying and Mapping, Information Engineering University, Zhengzhou 450052, China

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The National Natural Science Foundation of China Nos.41274016, 40974010

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Received Date: December 14, 2014
Published Date: October 04, 2016

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Abstract

Abstract

A single-epoch ambiguity resolution algorithm without a search process is proposed. Four basic satellites are selected, whose integer ambiguities are estimated by using the INS position, then (1,-1) and (-3,4) ambiguity combinations are formed. The ionospheric error of the (-3,4) combination is polynomially fitted. After systematic influences such as the ionospheric error are compensated, the ambiguity combination can be fixed by simple rounding. The ambiguities of each frequency can be determined by the combination and returned to resolve the receiver position. Based on the receiver position, the ambiguities of all other satellites can be calculated directly and fixed by rounding. The algorithm was validated by field test GNSS/INS data.
- INS,
- integer ambiguity,
- single-epoch,
- direct calculation,
- polynomial fitting,
- basic satellites

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