搜索雷达目标回波射频模拟试验设计与仿真

Design and Simulation of Simulative RF Test of Target Echo for Search Radar

使用真实目标的雷达试验耗费巨大且难以重复多次进行,中视频模拟式雷达试验不能完整地测试整个雷达系统且需要模拟复杂的雷达杂波。为克服上述困难,针对搜索雷达,设计了一种在外场进行的从雷达天线旁瓣注入模拟目标回波的雷达射频模拟试验,并介绍了试验基本原理,指出了该试验相较于实测试验与中视频模拟试验的优势,推导出了试验中模拟器相关辐射参数计算公式,建立起了模拟回波数学模型,最终设计出了模拟试验流程。以二坐标搜索雷达模拟试验为例进行了仿真,仿真结果验证了试验的有效性。

Testing radar with real targets costs a lot, and it is difficult to repeat many times. In order to overcome the difficulties above, a test was designed for searching radar, which is performed in outfield and injects simulative RF target echoes into radar through radar＇ s side-beam antenna. The basic principles of the test were introduced, and the advantages over the test using real target or simulative IF or video targets were pointed out. The formulas for cal- culating simulator＇s eradiation parameters were derived, and the mathematical models of simulative echo were con- structed. The process of the simulative test was designed at last. The simulation of simulative RF test for 2-D search- ing radar was fulfilled as an example, and the simulation results verify the validity of the test.