Vol. 31

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2013-06-26

The RFI Suppression Method Based on Stft Applied to SAR

By Tengfei Zhao, Yongsheng Zhang, Lin Yang, Zhen Dong, and Diannong Liang
Progress In Electromagnetics Research M, Vol. 31, 171-188, 2013
doi:10.2528/PIERM13050113

Abstract

Improved radio frequency interference suppression method based on short time Fourier transform applied to synthetic aperture radar is proposed in this paper. The radio frequency interference, including narrow-band interference and wide-band interference, are analyzed in time frequency domain. The interference is identified at instantaneous frequency spectrum by a novel threshold criterion in time frequency domain, and then an adaptive gain coefficient is determined for instantaneous frequency spectrum at every certain time. The gain coefficient can keep the useful signal correctly during interference suppression. In the end, the performance of the proposed method is demonstrated by the experiment based on the real synthetic aperture radar data adding the interference.

Citation


Tengfei Zhao, Yongsheng Zhang, Lin Yang, Zhen Dong, and Diannong Liang, "The RFI Suppression Method Based on Stft Applied to SAR," Progress In Electromagnetics Research M, Vol. 31, 171-188, 2013.
doi:10.2528/PIERM13050113
http://www.jpier.org/PIERM/pier.php?paper=13050113

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