An Improved Coherent Integration Detector with Adaptive Wavelet Transform

This paper proposes a novel long-term coherent intoption method for detection of weak high order polynomial phase signal (PPS), such as weak echo signals from maneuvering targets in radar and sonar applications. The method exploits the time-frequency tiling property of adaptive wavelet transform (AWT),and is practically realzable. In this paper, theunitary and linear phase wavelet basis function together with one order local linear approaching procedure are paesented to estimate the signal trace in time-frequency plane. Additionally, the Redon-Wigner transform (RWT) is exploited in subbandoutputs of AWT to achieve low computational complexity implementation. Analysis and simulation results confirm the efficacyof the method.