A comprehensive analysis on detection performances of LPI signals filtering strategies

This paper focuses on the detection performances achievable in the presence of Low Probability of Intercept (LPI) radar signals. It well known that the radar community is widely investigating LPI waveforms to reduce the Range Advance Factor (RAF) obtainable with Electronic Support Measure (ESM) systems. Several filtering strategies for LPI signals processing are already available in open literature, but a formal analysis on different detection strategies and a comparison on the detection probability has not yet carried out. In this paper we propose several detectors, using different signal filtering algorithms and different detection strategies. Moreover a comprehensive analysis for all the proposed receivers is carried out for different LPI waveform, also in comparison with the classical Fast Fourier Transform (FFT) filtering, widely adopted by current ESM systems.