How to detect the LPI radar signal and estimate the signal parameters in low signal to noise ratio condition is very important in modern Electronic Warfare (EW). The research in this field is belongs to the frontier of EW technology.

• 如何在低信噪比下检测LPI雷达信号并进行参数估计在电子战中具有重要的意义，这方面的研究至今属于电子战的前沿课题之一。