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Sensors 2015, 15(10), 25336-25365; doi:10.3390/s151025336

GPS Cycle Slip Detection Considering Satellite Geometry Based on TDCP/INS Integrated Navigation

1
Institute of Advanced Aerospace Technology, School of Mechanical and Aerospace Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-744, Korea
2
School of Mechanical and Aerospace Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 143-747, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Vittorio M.N. Passaro
Received: 21 July 2015 / Revised: 20 September 2015 / Accepted: 26 September 2015 / Published: 30 September 2015
(This article belongs to the Special Issue Inertial Sensors and Systems)
View Full-Text   |   Download PDF [2099 KB, uploaded 30 September 2015]   |  

Abstract

This paper presents a means of carrier phase cycle slip detection for an inertial-aided global positioning system (GPS), which is based on consideration of the satellite geometry. An integrated navigation solution incorporating a tightly coupled time differenced carrier phase (TDCP) and inertial navigation system (INS) is used to detect cycle slips. Cycle-slips are detected by comparing the satellite-difference (SD) and time-difference (TD) carrier phase measurements obtained from the GPS satellites with the range estimated by the integrated navigation solution. Additionally the satellite geometry information effectively improves the range estimation performance without a hardware upgrade. And the covariance obtained from the TDCP/INS filter is used to compute the threshold for determining cycle slip occurrence. A simulation and the results of a vehicle-based experiment verify the cycle slip detection performance of the proposed algorithm. View Full-Text
Keywords: cycle slips; inertial sensors; TDCP/INS integrated system cycle slips; inertial sensors; TDCP/INS integrated system
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Kim, Y.; Song, J.; Kee, C.; Park, B. GPS Cycle Slip Detection Considering Satellite Geometry Based on TDCP/INS Integrated Navigation. Sensors 2015, 15, 25336-25365.

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