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Title:
METHOD AND SYSTEM FOR TESTING RAIM PERFORMANCE CONFORMANCE OF BEIDOU ON-BOARD DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/052511
Kind Code:
A1
Abstract:
A method and a system for testing RAIM performance conformance of a BeiDou on-board device. The method comprises: acquiring a BeiDou ephemeris parameter and a testing parameter (101); on the basis of the ephemeris parameter and the testing parameter, determining whether each of a plurality of satellites are visible (102); when the satellites are visible, acquiring spacetime sample points (103); calculating an HPL value for each spacetime sample point (104); on the basis of the HPL values, selecting marginal satellite geometry points (105); testing the spacetime sample points and the marginal satellite geometry points to obtain a first testing result (106); acquiring a configuration parameter and a BeiDou ephemeris for a satellite navigation vector signal source for each marginal satellite geometry point (107); parsing the configuration parameter and the BeiDou ephemeris to obtain the number of visible satellites (108); determining whether the number of visible satellites is greater than a threshold value (109); if the number is greater, then testing the marginal satellite geometry points to obtain a second testing result (110); and determining whether the first testing result and the second testing result match (111). The method is capable of testing whether a BeiDou on-board device satisfies airworthiness requirements.

Inventors:
LIU RUIHUA (CN)
DING QIJIN (CN)
Application Number:
PCT/CN2020/120159
Publication Date:
March 25, 2021
Filing Date:
October 10, 2020
Export Citation:
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Assignee:
UNIV CIVIL AVIATION CHINA (CN)
International Classes:
G01S19/23
Foreign References:
CN110542911A2019-12-06
CN105738925A2016-07-06
CN106125101A2016-11-16
CN101799524A2010-08-11
CN102057291A2011-05-11
CN105044738A2015-11-11
US7741994B22010-06-22
CN109375241A2019-02-22
CN109307876A2019-02-05
CN105929416A2016-09-07
Attorney, Agent or Firm:
BEIJING GAOWO LAW FIRM (CN)
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