A Method for Extracting Micro-motion Feature of Target with Rotating Parts Based on Bi-ISAR System
If the target or any structure on the target undergoes micro-motion dynamics, such as mechanical vibrations or rotations, it will induce Doppler frequency modulation on the returned signal that generates sidebands about the target’s Doppler frequency, which is referred to as the micro-Doppler effect. The micro-Doppler signatures enable certain properties of the target to be determined that may be used for target recognition. In this paper, taking the Micro-Doppler effect caused by the rotation of target in Bi-static inverse synthetic aperture radar (Bi-ISAR) system as example, a novel extraction method of the micro-motion feature is presented. With the proposed method, the micro-motion parameters of the target can be detected rapidly from the spectrogram and the computational efficiency can be enhanced compared with that of the modified extended Hough transform. A computer simulation is given to illustrate the effectiveness of the proposed method.
Bi-ISAR Micro-Doppler Rotating parts Sinusoid detection
D. H. Deng J. He M. Wang Q. Zhang P. Bai
Inst. of Telecommunication Engineering, AFEU, Xi’an, 710077, China Synthetic Electronic Information System Research Department, AFEU, Xi’an 710051, China
国际会议
2011 IEEE CIE International Conference on Radar(2011年IEEE国际雷达会议RADAR 2011)
成都
英文
524-527
2011-10-24（万方平台首次上网日期，不代表论文的发表时间）