Research on LPI signals feature detection based on parallel filter bank and higher order cumulants
Hongyu Jiang · Systems engineering and electronics · 2009
A novel method for detecting the features of LPI signals is presented in which a filter bank is combined with higher order cumulants.The significance of this technique is that it separates the LPI waveform in small frequency bands,thus providing a detailed time-frequency description of the unknown signal,and it significantly reduces the interference by add-Gaussian noises and symmetric noises so as to estimate the LPI signals feature parameter,such as FMCW,P4,accurately.The paper also gives the design of system structure and detailed mathematic description.Finally simulation results and performance analysis illustrate that the proposed method is effective and practical,even if working at the signal environment of low SNR,the detection of LPI signal feature and identification based on the modulation parameters detected is good.