METHOD AND SYSTEM FOR TESTING RAIM PERFORMANCE CONFORMANCE OF BEIDOU ON-BOARD DEVICE

摘要

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.