BDS Airborne Antenna Gain Airworthiness Analysis and Verification
Based on the relevant technical standards of Radio Technical Committee for Aeronautics(RTCA)and others,the theoretical method for airborne antenna gain airworthiness analysis of Global Navigation Satellite System(GNSS)is given in combination with satellite communication link budget theory,and airworthiness analysis calculation of airborne antenna gain of Beidou Satellite Navigation System(BDS)is carried out.The results of BDS airborne antenna gain airworthiness analysis are used as the design index for the verification design and simulation of BDS Bl I band airborne passive antenna.The simulation results of BDS airborne passive antenna meet the design index and have good low elevation gain and circular polarization performance.The feasibility of the given GNSS airborne antenna gain airworthiness analysis method and the reasonableness of the BDS airborne antenna gain airworthiness analysis results are demonstrated.
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