Designing and implementation of variance-dependent Goldstein radar interferogram filtering
The variance-dependent Goldstein radar interferogram filter takes into account the information of both interferometric coherence and multilook factors, and can produce very consistent results for interferograms generated under a wide variety of multilook factors and with very different noise level....
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| Published in | Journal of Central South University Vol. 21; no. 8; pp. 3295 - 3301 |
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| Main Authors | , , , |
| Format | Journal Article |
| Language | English |
| Published |
Heidelberg
Central South University
01.08.2014
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| Subjects | |
| Online Access | Get full text |
| ISSN | 2095-2899 2227-5223 |
| DOI | 10.1007/s11771-014-2302-z |
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| Abstract | The variance-dependent Goldstein radar interferogram filter takes into account the information of both interferometric coherence and multilook factors, and can produce very consistent results for interferograms generated under a wide variety of multilook factors and with very different noise level. However, the filter is a bit complicated and its application is still very limited. We present the designing and implementation of the variance-dependent Goldstein radar interferogram filtering, emphasizing on the logic flow, the generation of look-up table, the determination of filtering parameter, and the handling of edge information loss. Experiments with real interferograms are provided to demonstrate the applications of the designed filtering. Comparisons with the result of the coherence-dependent Goldstein filter show that improvements from 18.4% to 36.9% are achieved when the variance-dependent filter is used, and the noisier the interferogram, the greater the improvement. |
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| AbstractList | The variance-dependent Goldstein radar interferogram filter takes into account the information of both interferometric coherence and multilook factors, and can produce very consistent results for interferograms generated under a wide variety of multilook factors and with very different noise level. However, the filter is a bit complicated and its application is still very limited. We present the designing and implementation of the variance-dependent Goldstein radar interferogram filtering, emphasizing on the logic flow, the generation of look-up table, the determination of filtering parameter, and the handling of edge information loss. Experiments with real interferograms are provided to demonstrate the applications of the designed filtering. Comparisons with the result of the coherence-dependent Goldstein filter show that improvements from 18.4% to 36.9% are achieved when the variance-dependent filter is used, and the noisier the interferogram, the greater the improvement. |
| Author | Hu, Jun Zhang, Xiao-hu Zhu, Jian-jun Wang, Qi-jie |
| Author_xml | – sequence: 1 givenname: Qi-jie surname: Wang fullname: Wang, Qi-jie organization: School of Geosciences and Info-Physics, Central South University – sequence: 2 givenname: Xiao-hu surname: Zhang fullname: Zhang, Xiao-hu email: zhangxiaohu@vip.163.com organization: Department of Military Aerospace, College of Aerospace and Materials Engineering, National University of Defense Technology, Hunan Key Laboratory of Videometrics and Vision Navigation – sequence: 3 givenname: Jian-jun surname: Zhu fullname: Zhu, Jian-jun organization: School of Geosciences and Info-Physics, Central South University – sequence: 4 givenname: Jun surname: Hu fullname: Hu, Jun organization: School of Geosciences and Info-Physics, Central South University |
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| Cites_doi | 10.1029/2003GL018014 10.1002/cjg2.1711 10.1016/j.jastp.2007.04.007 10.1109/TGRS.2003.817212 10.1109/36.210464 10.1016/j.isprsjprs.2008.03.001 10.1029/2001JB000298 10.1016/j.gloplacha.2012.12.004 10.1080/01431160500522692 10.1007/s11771-013-1688-3 10.1088/0266-5611/14/4/001 10.1080/19479832.2011.577563 10.1029/1998GL900033 10.1016/S1003-6326(14)63132-0 10.1029/2002GL015159 10.14358/PERS.70.10.1151 10.1007/s11430-012-4509-x 10.1109/36.175330 |
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| Keywords | coherence Goldstein filter variance-dependent radar synthetic aperture radar interferometry (InSAR) multilook factor |
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