MMSE准则下部分周期数据的微多普勒参数估计

doi:10.3969/j.issn.1001-2400.2013.02.020

Abstract

Abstract:

The micro-Doppler characteristic of a rotation target can be represented by a sinusoid. Sometimes the integrating time is shorter than the rotation period. In this case, a new method based on the minimal mean-square error(MMSE) for estimating the micro-Doppler parameter from a fraction of the period data is proposed. The error function is constructed between sinusoid and micro-Doppler signal extracted from the time-frequency distribution of the echoes. Solving the error function in the criterion MMSE, we can obtain the rotation micro-Doppler parameters, i.e. rotation rate and rotation radius. We also prove that the discretisation error and Gaussian white noise induced by extracting the micro-Doppler signal have little effect on the accuracy of the estimated parameters. The validity and accuracy of the proposed method are evaluated via both simulation and experimental data.

Key words: micro-Doppler, minimal mean-square error(MMSE), rotation rate, rotation radius

CLC Number:

TN957

ZUO Lei;LI Ming;ZHANG Xiaowei. Micro-Doppler parameter estimation from a fraction of the period data with the MMSE criterion[J].J4, 2013, 40(2): 123-129.

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Micro-Doppler parameter estimation from a fraction of the period data with the MMSE criterion

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