基于移动式测试车的二次雷达天线外场测试方法

为解决在二次雷达阵地或外场试验场等环境下，天线不易转动或移动的二次雷达天线方向图测试困难的 问题，采用基于移动式测试车在行进中实施天线方向图测试的方法。分析常规天线远场测试原理，详细阐述文中方 法的测试原理、系统组成、流程及误差计算，并在某外场试验场对实装天线方向图进行测试。结果表明：该方法基 本与暗室测试结果保持一致，能解决上述受限外场环境下天线方向图测试问题。

Secondary Radar Antenna Test Method Based on Mobile Test Vehicle

In order to solve the problem that the antenna pattern of secondary radar is difficult to be measured when the antenna is not easy to rotate or move in an environment like the secondary radar position or the outfield test, a method of antenna radiation pattern test based on the mobile testing vehicle is adopted. This paper analyzes the principle of far-field test of conventional antenna, and elaborates the test principle, system composition, procedures and error calculation of the method in this paper, and the mounted antenna pattern is tested in the outfield. The results show that the method is basically consistent with the test results of the dark room, and can solve the problem of antenna pattern test in the confined external environment above.