中文摘要：

目的：生命探测雷达在实际探测中，建筑物的强杂波信号会造成干扰，致使雷达的探测准确性降低。通过仿真实验．解决强杂波信号的干扰问题。方法：依据原理通过Matlab软件在计算机上建立了自动对消过程模型并进行仿真实验。结果：通过仿真实验，发现对消合成信号So（t）的变化趋势与对消时间和精度无关，而与强杂波信号的幅度和相位有关。结论：仿真结果对数字对消电路的设计工作具有实际指导意义。

英文摘要：

Objective To solve the signal interference problem by simulation algorithm when clutter signal can bring interference to radar life detecting system and reduce accuracy of its detecting. Mothods According to some theory, automatic cancellation model was built up in computer with Matlab software. Results Simulation experiment shows that the cancellation composed signal So（t） is not correlative with the time and precision of auto-counteract but the amplitude and phase of clutter signal. Conclusion The results of the experiment have instructive significance about design of autocounteract circuit.