دورية أكاديمية
A MULTI-STEP DE-NOISING METHOD FOR INTERFEROGRAM IN PS-INSAR
| العنوان: | A MULTI-STEP DE-NOISING METHOD FOR INTERFEROGRAM IN PS-INSAR |
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| المؤلفون: | R. J. Wang, K. Xu, X. L. Liu |
| المصدر: | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLVIII-3-W1-2022, Pp 53-58 (2022) |
| بيانات النشر: | Copernicus Publications, 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Technology LCC:Engineering (General). Civil engineering (General) LCC:Applied optics. Photonics |
| مصطلحات موضوعية: | Technology, Engineering (General). Civil engineering (General), TA1-2040, Applied optics. Photonics, TA1501-1820 |
| الوصف: | In order to reduce the influences of the noises in Synthetic Aperture Radar (SAR) image on accurate extraction of permanent scattered (PS) points in PS-InSAR technology, a multi-step de-noising approach considering the characteristics of the noises is proposed in this study. The method can deal with the noises from one-dimensional signals perspective. First, the two-dimensional interferogram is transformed into one-dimensional phase signals by extracting the phase values of each row in S-shaped. Next, the phase signals are decomposed by the extreme-point symmetric mode decomposition (ESMD) method. Then, for the purpose of reserving more useful phase information, the Lee filtering method is applied to the high-frequency noisy part identified based on the Spearman's correlation coefficients in ESMD decomposition. Finally, the de-noised interferogram is recovered from the phase signals by ways in S-shaped in reverse. The experimental results show that the proposed method is effective in dealing with the noises and can achieve a higher accuracy of interferogram for PS-InSAR. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1682-1750 2194-9034 |
| Relation: | https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLVIII-3-W1-2022/53/2022/isprs-archives-XLVIII-3-W1-2022-53-2022.pdf; https://doaj.org/toc/1682-1750; https://doaj.org/toc/2194-9034 |
| DOI: | 10.5194/isprs-archives-XLVIII-3-W1-2022-53-2022 |
| URL الوصول: | https://doaj.org/article/88297e654477458f85d50271e7fe44fd |
| رقم الأكسشن: | edsdoj.88297e654477458f85d50271e7fe44fd |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 16821750 21949034 |
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| DOI: | 10.5194/isprs-archives-XLVIII-3-W1-2022-53-2022 |