Then the radar echo models and their realization methods were studied, especially on radar targets and land clutter. 然后分析了雷达回波信号模型，重点讨论了雷达目标和地杂波的信号模型及产生方法。
Because the truths of the echo signal simulation are directly influenced by the accuracy of the simulation algorithms. 模拟算法的优劣直接影响着模拟产生的回波信号的真实性。
