噪声背景下的信号检测是一项复杂而又重要的任务，在雷达信号检测和通信领域都是重要的课题。在低信噪比情况下与普通自相关函数法进行了比较。给出了时域及频域(Signal detection in noisy background is a complex and important task. It is an important topic in the field of radar signal detection and communication. Compared with the gene