InSAR phase noise filter in frequency domain
InSAR phase noise filter in frequency domain
- Author(s): Zhiyong Suo ; Ming Li ; Qingjun Zhang ; Jinqiang Zhang ; Chao Fang
- DOI: 10.1049/cp.2015.1050
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- Author(s): Zhiyong Suo ; Ming Li ; Qingjun Zhang ; Jinqiang Zhang ; Chao Fang Source: IET International Radar Conference 2015, 2015 page ()
- Conference: IET International Radar Conference 2015
- DOI: 10.1049/cp.2015.1050
- ISBN: 978-1-78561-038-7
- Location: Hangzhou, China
- Conference date: 14-16 Oct. 2015
- Format: PDF
In this paper, we propose an improved InSAR phase filter in frequency domain based on the Goldstein filter. Firstly, we use different window size determined by the coherence to suppress phase noise. Secondly, we use fringe frequencies compensation to eliminate the effect of the terrain topography. Thirdly, we excute the phase filtering procedure pixel by pixel with a new filtering parameter. Another obvious difference is that we use the Fourier transformation of a small window to deal with the power spectrum of InSAR phase patches. The effectiveness of the improved InSAR phase noise filtering method is investigated by both simulated and real data sets.
Inspec keywords: radar interferometry; frequency-domain analysis; radar imaging; Fourier transforms; synthetic aperture radar; topography (Earth); phase noise; image filtering
Subjects: Radar equipment, systems and applications; Mathematical analysis; Filtering methods in signal processing; Integral transforms; Optical, image and video signal processing
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