title: GPS Cycle Slip Detection Considering Satellite Geometry Based on TDCP/INS Integrated Navigation.
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.
authors.affiliation: Institute of Advanced Aerospace Technology, School of Mechanical and Aerospace Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-744, Korea. younsil@snu.ac.kr.
authors.forename: Younsil
authors.initials: Y
authors.lastname: Kim
authors.affiliation: Institute of Advanced Aerospace Technology, School of Mechanical and Aerospace Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-744, Korea. june85@snu.ac.kr.
authors.forename: Junesol
authors.initials: J
authors.lastname: Song
authors.affiliation: Institute of Advanced Aerospace Technology, School of Mechanical and Aerospace Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-744, Korea. kee@snu.ac.kr.
authors.forename: Changdon
authors.initials: C
authors.lastname: Kee
authors.affiliation: School of Mechanical and Aerospace Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 143-747, Korea. byungwoon@sejong.ac.kr.
authors.forename: Byungwoon
authors.initials: B
authors.lastname: Park
keywords: TDCP/INS integrated system; cycle slips; inertial sensors