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引言要制造出高性能的雷达天线,必须要具备高级的测试技术。低于主瓣峰值50dB的旁瓣电平及亚毫孤度的指向精度,正成为雷达天线的共同要求。常规的远场测试方法一般来说是不适用于精密地测试这种高性能天线。本文的重点集中在用近场测试技术测量雷达天线的方向图和增益。为了提高天线的测试精度和增加测试能力,降低测试成本,除测试天线的方向图和增益之外,同时提供对天线的诊断能力,研制了一种新的天线测试技术。表1列出了目前使用的常用的雷达天线测试技术。
Introduction To create a high-performance radar antenna, you must have advanced testing techniques. Sidelobe levels below 50dB of the main lobe and sub-millimeter solitary pointing accuracy are becoming the common requirements of radar antennas. Conventional far-field testing methods are generally not suitable for precision testing of such high-performance antennas. This article focuses on the measurement of radar antenna patterns and gains using near-field test techniques. In order to improve the test accuracy and test capability of the antenna and reduce the test cost, a new antenna test technology is developed in addition to the test antenna’s antenna pattern and gain as well as its ability to diagnose the antenna. Table 1 lists commonly used radar antenna testing techniques currently used.