Imaging of moving target with rotating parts based on hough transform

Abstract

The rotation of structures in a target introduces additional frequency modulations on the returned signals and also generates side-bands about the center Doppler frequency of the target. In other words, the body image will be contaminated due to the interference from the rotating parts. In this paper, an imaging method for moving targets with rotating parts is presented. The method is simple to implement and is based on the Hough transform which is widely used in the image processing. Using the Standard Hough Transform and an extended Hough Transform, we put forward a separation method by detecting the straight line and the sinusoid on the spectrogram, respectively. A computer simulation is given to illustrate the effectiveness of the proposed method.