中文说明：
由匹配滤波器的讨论以及仿真分析可以得知，线性调频信号在经过传输时延以及加性噪声干扰的情况下，依然可以很有效的判断出信号的存在。
English Description：
From the discussion and simulation analysis of matched filter, it can be seen that LFM signal can still effectively judge the existence of signal after transmission delay and additive noise interference