A New Method of Translational Compensation for Spatial Precession Targets with Rotational Symmetry

Rong CHEN  Cunqian FENG  Sisan HE  Yi RAO  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E100-A   No.12   pp.3061-3066
Publication Date: 2017/12/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E100.A.3061
Type of Manuscript: LETTER
Category: Analog Signal Processing
translational motion compensation,  Micro-Doppler,  third order polynomial fitting,  conjugate multiplication,  

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The extraction of micro-motion parameters is deeply influenced by the precision of estimation on translational motion parameters. Based on the periodicity of micro-motion, the quadratic polynomial fitting is carried out among range delays to align envelope. The micro-motion component of phase information is eliminated by conjugate multiplication after which the translational motion parameters are estimated. Then the translational motion is precisely compensated through the third order polynomial fitting. Results of simulation demonstrate that the algorithm put forward here can realize the precise compensation for translational motion parameters even under an environment with low signal noise ratio (SNR).