Journal of Systems Engineering and Electronics ›› 2010, Vol. 21 ›› Issue (4): 544-549.doi: 10.3969/j.issn.1004-4132.2010.04.003

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Modeling simulation and experiment of micro-Doppler signature of precession

Hongwei Gao1,*, Lianggui Xie2, and Shuliang Wen1   

  1. 1. Beijing Institute of Radio Measurement, Beijing 100039, P. R. China;
    2. China Aerospace Science & Industry Corporation, Beijing 100048, P. R. China
  • Online:2010-08-26 Published:2010-01-03

Abstract: Spatial precession is a special micro-motion of the spinning-directional target, and the micro-Doppler signature of the cone-shaped target with precession is studied. The micro-motion model of precession is built first, and then the micro-Doppler model is developed based on the proposed concept of micro-motion matrix, by which the theoretical formula of micro-Doppler signature of precession is derived. In order to further approach to the actual case, the occlusion effect is firstly considered in micro-Doppler, and the simulated result with occlusion effect is well in accordance with the measured result in microwave anechoic chamber, which suggests that the micro motion model and micro-Doppler model of precession are both valid.

Key words: precession, micro-Doppler, micro-motion matrix, occlusion effect.