The Improvement for Baran Phase Filter Derived From Unbiased InSAR Coherence

Author

Mi Jiang ; Xiaoli Ding ; Zhiwei Li ; Xin Tian ; Wu Zhu ; Chisheng Wang ; Bing Xu

Author_Institution

Sch. of Earth Sci. & Eng., Hohai Univ., Nanjing, China

Volume

7

Issue

7

fYear

2014

fDate

Jul-14

Firstpage

3002

Lastpage

3010

Abstract

We present an improvement for the adaptive Gold-stein phase filter guided by interferometric synthetic aperture radar (InSAR) coherence (Baran phase filter). The proposed method addresses the under-filtering over incoherent area where the filter parameter alpha is underestimated by the biased coherence estimation. Through correcting the overestimate of the sample coherence, the correct filter parameter alpha is derived and the performance of the filter is optimized. Experimental results from different data sets demonstrate the advantages of the approach.

Keywords

adaptive filters; estimation theory; parameter estimation; radar interferometry; synthetic aperture radar; Baran phase filter; adaptive Gold-phase filter; biased coherence estimation; filter parameter alpha; interferometric synthetic aperture radar; unbiased InSAR coherence; Accuracy; Coherence; Earth; Educational institutions; Estimation; Phase noise; Baran filter; coherence; interferometric synthetic aperture radar (InSAR); unbiased coherence estimator;

fLanguage

English

Journal_Title

Selected Topics in Applied Earth Observations and Remote Sensing, IEEE Journal of

Publisher

ieee

ISSN

1939-1404

Type

jour

DOI

10.1109/JSTARS.2013.2296322

Filename

6712049