一种基于微波暗室的大角域卫星导航接收机测试场景构建方法

提出了一种基于微波暗室的大角域测试场景构建方法，该方法利用已有42射频面阵，采用多状态联合校准方法对面阵天线单元到接收机的信号幅度和相位进行校准，以及采用灰色关联分析方法将外界环境下的卫星星座、动态干扰在微波暗室内实现逼真映射，构造最大视场角为160的半实物抗干扰测试场景。仿真测试结果表明:暗室天线单元与实际场景下的卫星星座在角域关系下最大误差在高增益3 dB 波束宽度内，暗室模拟的动态干扰与实际环境下到达接收机的功率基本一致；最后实现了对多波束抗干扰接收机的测试，并通过干信比与有效载噪比的关系曲线说明了该方法能够在室内实现导航接收机测试环境的逼近模拟，并准确地测试出多波束接收机的抗干扰性能。

Construction method of wide angle test scenario for satellite navigation receiver based on anechoic chamber

A construction method of wide angle test scenario based on the anechoic chamber was proposed. Utilizing the existing 42 RF array, the amplitude and phase of signals arriving at the receiver from array antenna units were calibrated by multi-state joint calibration. And by gray relational analysis principles, the proposed method achieved the approximately true mapping satellite constellation and dynamic interference in the anechoic chamber. So the semi-physical anti-jamming test environment whose largest field angle was 160 was constructed. Simulation and test results show that the maximal deviation between antenna units in the anechoic chamber and the angular domain of the satellite constellations in the real scene is within high gain 3 dB beam width, and the power needed for dynamic interference to arrive at the receiver is approximately the same whether at actual scene or under simulation in anechoic chamber. Lastly, the anti-jamming test of multi-beam receiver was completed, the relation curves of J/S and C/N0 were given, indicating that the proposed method can not only effectively simulate the outfield test scenario of satellite navigation receiver indoors, but also accurately test the performance of multibeam anti-jamming receiver.