| InSAR干涉图滤波方法对比 |
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| 引用本文： | 赵诣,蒋弥,杨川,钱伯至.InSAR干涉图滤波方法对比[J].测绘科学,2017,42(6). |
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| 作者姓名： | 赵诣 蒋弥 杨川 钱伯至 |
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| 作者单位： | 河海大学地球科学与工程学院,南京,210000 |
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| 基金项目： | 地理国情监测国家测绘地理信息局重点实验室开放基金项目，中央高校基本科研业务费专项 |
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| 摘 要： | 针对不同滤波算法在InSAR数据处理中去噪效果的差异,该文从滤波理论出发,采用模拟和真实干涉数据进行实验。在各种滤波算法中,均值滤波(多视处理)、Goldstein滤波及其变种滤波应用广泛,本文对4种滤波方法进行了系统分析,深入探讨了经典InSAR滤波和国内外学者算法的优缺点。实验表明:4种滤波均能有效抑制噪声,提升干涉图质量。其中,Goldstein滤波以及两种改进的滤波效果要明显优于均值滤波,且具有更好的自适应性或条纹保持能力,较经典Goldstein滤波而言,变种滤波方法不仅保持了Goldstein滤波的优点,在边缘信息和细节保持能力方面优势更加显著。
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| 关 键 词： | InSAR 相位噪声 相位滤波 相干性 |
Comparision between filtering methods for InSAR interferogram |
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| ZHAO Yi,JIANG Mi,YANG Chuan,QIAN Bozhi.Comparision between filtering methods for InSAR interferogram[J].Science of Surveying and Mapping,2017,42(6). |
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| Authors: | ZHAO Yi JIANG Mi YANG Chuan QIAN Bozhi |
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| Abstract: | Aiming at different filtering algorithms' effects of denoising in the processing of the synthetic aperture radar interferometry(InSAR)data,based on the filtering theory the analysis was carried out by using the simlulation and the real interferometric data.Among various filtering methods,mean filter(multilook processing),Goldstein filter and its corresponding modified methods were widely used.The advantages and disadvantages of the classical InSAR filter and the domestic and foreign researchers' algorithms were studied in this paper as well.The experimental results showed that four filters could suppress the noise and improve the quality of interference effectively.Among them,the Goldstein filter and its variants acted better than the mean filter significantly,and had better adaptive or the ability to maintain the stripe,compared with the classical Goldstein filtering.And the modified methods not only keep the advantages of Goldstein filter,but also have more significant advantages in the edge information and fine pitch. |
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| Keywords: | InSAR phase noise phase filter coherence |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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