描述了一种用于机载雷达测试的中频地杂波信号模拟器,其特点是杂波信号功率谱形状十分接近理想的高斯型,其幅度分布和相位分布也同时接近真实的地杂波分布。该设备采用了双通道独立产生高斯过程的方法,保证了输出杂波的幅相随机性。为了模拟载机的运动和天线扫描引起的杂波中心频率及带宽的变化,杂波的中心频率实时可调,杂波的带宽也可以在很宽的范围内调定。最后,本文给出了该设备的性能指标及测试结果。 An intermediate frequency clutter simulator for airborne radar testing is described. Its characteristic is that the shape of the clutter signal is very close to the ideal Gaussian type, and its amplitude distribution and phase distribution are also close to the true ground clutter distribution . The device uses a two-channel independent Gauss process to ensure that the output clutter amplitude and phase randomness. In order to simulate the carrier movement and antenna scanning caused by clutter center frequency and bandwidth changes, the clutter center frequency real-time adjustable, clutter bandwidth can also be set in a very wide range. Finally, this article gives the performance of the device and test results.