Frontiers of Electrical and Electronic Engineering >

2007 , Vol. 2 >Issue 4: 404 - 409

DOI: https://doi.org/10.1007/s11460-007-0075-y

Low velocity target detection based on time-frequency image for high frequency ground wave radar

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  • School of Electronic Information, Wuhan University, Wuhan 430072, China

Published date: 05 Dec 2007

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Abstract

The Doppler spectral broadening resulted from non-stationary movement of target and radio-frequency interference will decrease the veracity of target detection by high frequency ground wave (HFGW) radar. By displaying the change of signal energy on two dimensional time-frequency images based on time-frequency analysis, a new mathematical morphology method to distinguish target from nonlinear time-frequency curves is presented. The analyzed results from the measured data verify that with this new method the target can be detected correctly from wide Doppler spectrum.

Cite this article

YAN Songhua, WU Shicai, WEN Biyang . Low velocity target detection based on time-frequency image for high frequency ground wave radar[J]. Frontiers of Electrical and Electronic Engineering, 2007 , 2(4) : 404 -409 . DOI: 10.1007/s11460-007-0075-y

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