在雷达罩电性能测试过程中,需要用到试验天线,试验天线的类型、极化方式和口径尺寸对雷达罩电性能测试结果有一定影响。文中对试验天线口径尺寸对雷达罩传输效率的影响程度进行了仿真计算,通过对比测试验证了仿真计算的正确性。计算和测试结果表明:当试验天线与装机天线口径尺寸差别不大时,试验天线口径尺寸对传输效率的影响较小。在工程实践中,当无法得到装机天线时,可以用类型相同、极化方式相同、口径相近的天线作为试验天线,以完成传输效率的测试。

During test for radome electrical performance,test antenna is needed. The type,polarization and aperture size of test antenna have certain influence on radome electrical performance. Completed a simulation calculation of influence degree on radome electrical performance caused by test antenna aperture size, verified by contrast test. Calculation and test results show that the test antenna aperture size has little influence on radome transmission efficiency as the difference between test antenna and airborne antenna is little. In engineering practice ,when there is not airborne antenna,we can use anthother antenna which has the same type, same polarization and similar size to airborne antenna to test transmission efficiency.

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