Title:
CYCLE SLIP DETECTION METHOD APPLIED TO GLOBAL NAVIGATION SATELLITE SYSTEM (GNSS) AND CYCLE SLIP REPAIR METHOD APPLIED TO GNSS
Document Type and Number:
WIPO Patent Application WO/2023/197487
Kind Code:
A1
Abstract:
A cycle slip detection method applied to a global navigation satellite system (GNSS) and a cycle slip repair method applied to a GNSS. The cycle slip detection method comprises: according to carrier phase observation values of s2 common-view satellites that are received by a monitoring station at an epoch t, determining s2 carrier phase three-difference observation values of the monitoring station at the epoch t, and according to pseudo-range observation values of the s2 common-view satellites that are received by the monitoring station at the epoch t, determining s2 pseudo-range three-difference observation values of the monitoring station at the epoch t (101); substituting, into a three-difference observation equation based on a geometric GB model, the s2 carrier phase three-difference observation values and the s2 pseudo-range three-difference observation values that correspond to the epoch t (102); and solving 2s2 solving formulas on the basis of the s2 carrier phase three-difference observation values and the S2 pseudo-range three-difference observation values, so as to obtain integer cycle slip values of the s2 common-view satellites at the epoch t, and if any integer cycle slip value satisfies a preset condition, determining that the common-view satellite corresponding to the integer cycle slip value has a cycle slip during the observation process (103). The present invention is suitable for cycle slip detection in a complex environment, such that a cycle slip value with higher precision is obtained.
Inventors:
LIU HUAN (CN)
ZHANG ZHETAO (CN)
YUAN HAIJUN (CN)
ZHANG MINGKAI (CN)
ZHANG ZHETAO (CN)
YUAN HAIJUN (CN)
ZHANG MINGKAI (CN)
Application Number:
PCT/CN2022/112718
Publication Date:
October 19, 2023
Filing Date:
August 16, 2022
Export Citation:
Assignee:
SHANGHAI HIGH GAIN INF TECH CO LTD (CN)
UNIV HOHAI (CN)
UNIV HOHAI (CN)
International Classes:
G01S19/37; G01S19/44
Foreign References:
| CN114152961A | 2022-03-08 | |||
| CN109799521A | 2019-05-24 | |||
| CN108169774A | 2018-06-15 |
Other References:
YUAN, HAIJUN ET AL.: "Real-Time Cycle Slip Detection and Repair Method for BDS-3 Five-Frequency Data", IEEE ACCESS, vol. 9, 8 April 2021 (2021-04-08), pages 51189 - 51201, XP011848412, ISSN: 2169-3536, DOI: 10.1109/ACCESS.2021.3069745
LI, BOFENG ET AL.: "Geometry-based cycle slip and data gap repair for multi-GNSS and multi-frequency observations", JOURNAL OF GEODESY, 15 June 2018 (2018-06-15), pages 399 - 417, XP036717253, ISSN: 0949-7714, DOI: 10.1007/s00190-018-1168-5
徐天扬 等 (XU, TIANYANG ET AL.): "一种适用于单频 GNSS 数据的多周跳探测与修复方法 (Non-official translation: A Multi-Cycle Slip Detection And Repair Method for Single-Frequency GNSS Data)", 武汉大学学报(信息科学版) (GEOMATICS AND INFORMATION SCIENCE OF WUHAN UNIVERSITY), 8 November 2021 (2021-11-08), pages 1 - 17, ISSN: 1671-8860
LI, BOFENG ET AL.: "Geometry-based cycle slip and data gap repair for multi-GNSS and multi-frequency observations", JOURNAL OF GEODESY, 15 June 2018 (2018-06-15), pages 399 - 417, XP036717253, ISSN: 0949-7714, DOI: 10.1007/s00190-018-1168-5
徐天扬 等 (XU, TIANYANG ET AL.): "一种适用于单频 GNSS 数据的多周跳探测与修复方法 (Non-official translation: A Multi-Cycle Slip Detection And Repair Method for Single-Frequency GNSS Data)", 武汉大学学报(信息科学版) (GEOMATICS AND INFORMATION SCIENCE OF WUHAN UNIVERSITY), 8 November 2021 (2021-11-08), pages 1 - 17, ISSN: 1671-8860
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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