宽带下视雷达信号模拟器的研制

分析了宽带下视雷达目标回波的特点及散射中心截面积的确定方法，地杂波回波的特点及其概率密度函数，功率谱函数，提出了一种通用的雷达信号模拟器模型，采用ＰＣ机ＤＭＡ控制方式实现了一个宽带下视雷达信号模拟器。解决了硬件设计和软件算法中的关键技术问题，并获得了良好的性能指标。

Development of Wideband Down Looking Radar Signal Simulator

The characters of the target echo of wideband down looking radar and the method of determining cross section of the echo's scatterers were analyzed.The characters of the echo of land clutter and the echo's probability density function and power spectrum were analyzed.A general model of radar signal simulator was advanced. A wideband down looking radar signal simulator was realized by the control of the DMA of PC computer.The key problems of hardware and software implementations were resolved.The simulator has been used in the adjustment of a radar system and works very well.