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综合天线方向图测量和光学测量方法研究了天线远场测量和近场测量光学测试系统,进而利用光学仪器测试了星载天线波束指向的两种测试方法.望远镜结合天线远场测试系统能较准确地测试出天线波束指向.同时,提出了采用准直仪及波罗棱镜在天线平面近场测试系统测试波束指向的方法.海洋二号卫星载荷校正辐射计观测天线波束指向的测试表明,该方法是有效和准确的,其可以推广至一般高增益天线测试.
In this paper, the antenna far-field measurement and near-field measurement optical test system are studied based on the antenna pattern measurement and the optical measurement method, and then two kinds of test methods of the satellite antenna’s beam pointing are tested by using the optical instruments. The telescope combined with the antenna far-field test system can be more accurate The beam pointing direction of the antenna was tested.At the same time, a method of testing the beam direction by using the collimator and the Polo prism in the antenna plane near-field test system was proposed.The testing of the beam pointing direction of the antenna of the NO.2 satellite load correction radiometer showed that this method Is valid and accurate and can be generalized to the general high gain antenna test.