| Technology and Methodology |
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PHASE NOISE FILTERINGS IN INSAR INTERFEROGRAM |
| LIN Hui1, DU Pei-jun2, SHU Ning3, ZHAO Chang-sheng1 |
1. Department of Territory Resource Information and Surveying Engineering of XuZhou Normal University, Xuzhou 221116, China;
2. Department of Geographical Information Science, China University of Mining and Technology, Xuzhou 221008, China;
3. School of Remote Sensing Information Engineering, Wuhan University, Wuhan 430079, China |
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Abstract There exist a lot of phase noises in interferogram, which will adversely affect the product precision of interferometric synthetic aperture radar (INSAR). It is therefore very important to reduce the phase noise before phase unwrapping. In this paper, the authors deal with four noise filtering methods, namely multi-look processing, medium filtering, gradient-based adaptive filtering and additive filtering. In practice, the combination of these filtering methods would yield even better result.
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Issue Date: 02 August 2011
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| [1] 舒宁.微波遥感原理［M］.武汉:武汉测绘科技大学出版社,2000.[2] 方圣辉,等.SAR影像去噪声方法的研究［J］.武汉测绘科技大学学报,1998,23(3).[3] 徐华平,等.干涉SAR中相位图的噪声抑制［J］.北京航空航天大学学报,2001,27(1).[4] 廖明生.由INSAR影像高精度自动生成干涉图的关键技术研究［D］.武汉:武汉测绘科技大学,2002.[5] Jong-Sen Lee.A New Technique for Noise Filtering of SAR Interferometric Phase Images［J］.IEEE,1998,30(5). |
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2004,
Vol. 16
