Detection for Multi-target Radar Echo Signals Based on Time-frequency Reassignment-Hough Transform

A novel method of detection and parameter estimation for multi target radar echo signal is proposed in this paper, which by applying reassignment method to the quadratic time frequency distributions of the signal before Hough transform to eliminate the cross term interference and improve the accuracy of parameter estimation and reduce the time of Hough transform. The simulation results show that this method is not only suitable for the detection and the parameter estimation of multi target radar echo signal, but also good at reducing noise.