| InSAR干涉像对的方位向频谱滤波 |
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| 引用本文： | 王冬红,刘军,张莉.InSAR干涉像对的方位向频谱滤波[J].测绘学院学报,2007,24(6):443-446. |
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| 作者姓名： | 王冬红 刘军 张莉 |
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| 作者单位： | 信息工程大学测绘学院，信息工程大学测绘学院，65015部队 河南郑州450052，65015部队，辽宁大连116023，河南郑州450052，辽宁大连116023 |
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| 摘 要： | 干涉图的质量是影响InSAR数据处理结果的重要因素。根据干涉图中噪声的不同来源,重点分析了在重复轨道干涉测量模式下,主辅影像多普勒中心频率不一致的成因及其对干涉图的影响。利用SAR影像方位向频谱的特点,在影像上检测得到了多普勒中心频率。并推导了方位向频谱预滤波函数的具体形式。针对ERS数据的实验证明:文中的算法能有效消除主辅影像方位向频谱包络的差异,提高干涉像对的相干性,改善干涉图质量。
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| 关 键 词： | InSAR 干涉图 方位向 多普勒中心频率 |
| 文章编号： | 1673-6338（2007）06-0443-04 |
| 收稿时间： | 2007-06-12 |
| 修稿时间： | 2007-10-23 |
Azimuth Spectral Filtering for InSAR Images |
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| WANG Dong-hong, LIU Jun, ZHANG Li.Azimuth Spectral Filtering for InSAR Images[J].Journal of Institute of Surveying and Mapping,2007,24(6):443-446. |
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| Authors: | WANG Dong-hong LIU Jun ZHANG Li |
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| Abstract: | The quality of interferogram was important to InSAR processing.Base on different sources of noise in interferogram, we analysed the reasons why the master and slave images' Doppler central frequency was inconsistent under the repeat-track interferometry and its influence to interferogram.Using SAR images' characters in azimuth spectral,we got the image's Doppler central frequency and deduced the function of azimuth spectral prior filtering.The test results of ERS image data showed that the method could reduce the difference between the azimuth spectral envelope of master and slave images,enhance the correlation between the images,and improved the quality of interferogram. |
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| Keywords: | InSAR interferogram azimuth Doppler central frequency |
| 本文献已被 CNKI 维普 等数据库收录！ |
