Detector design and intercept metrics for intra-pulse radar-embedded communications

This paper discusses the design of low probability of intercept (LPI) communication paradigm that make use of masking radar illumination. Such a system, by its very nature, must provide a robust and reliable communication link to the desired receiver while masking its presence from intercept receivers. To ensure detection reliability at the desired receiver, a two-stage Neyman Pearson criterion is considered that regulates BER by effectively inducing an SNR-dependent data rate. Two intercept metrics are considered to assess the covert nature of such a communication system. These intercept metrics are compared to the detection metric to show the efficacy of the proposed system.