Muti-Channel Digital LPI Signal Detector

The theory of LPI radar signal interception is introduced and a method using multi-channel digital deramping is discussed in detail for FMCW signals. Many simulation experiments on the method have been done in several possible situations, and on the basis of them, the influences of mismatch factor and unsynchronized phase on the detection performance of the digital LPI radar detector are analyzed. At last, the method of estimating the parameters of LPI signal is summarized. It is demonstrated that the LPI radar signal can be extracted from the noise background by means of digital deramping