Journal of Astronautics ›› 2018, Vol. 39 ›› Issue (12): 1357-1363.doi: 10.3873/j.issn.1000-1328.2018.12.006

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Translational Motion Compensation and Micro Doppler Feature Extraction of Space Spinning Targets

GU Fu fei, FU Min hui, LING Xiao dong, ZHANG Yin   

  1. China Satellite Maritime Tracking and Control Department, Jiangyin 214430, China
  • Received:2018-01-10 Revised:2018-04-22 Online:2018-12-15 Published:2018-12-25


In order to compensate the translational motion and extract the micro-Doppler (m-D) feature of the space spinning targets, a novel method based on the delayed conjugated multiplication and m-D compensation is put forward. The translational acceleration is estimated by the delayed conjugated multiplication processing. A set of m-D basis-signals are generated by discretizing the m-D parameter domain. Thus after acceleration compensation processing, the echo is compensated by the m-D basis-signals. The m-D feature and residual velocity can be achieved by searching the maximum spectral-peak. Finally, the simulations demonstrate the proposed method can estimate the motion parameters effectively and extract the m-D feature quickly.

Key words:  Spinning target, Translation compensation, Delayed conjugated multiplication, Micro-motion decomposition

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