Using apriori information in interferometric processing of high resolution sar data
The paper presents an analysis of approaches to using apriori information on relief to improve the quality of spaceborne SAR data interferometric processing. The impact of relief on geometric matching of SAR images is analyzed and an algorithm of fast and high-precision SAR image matching based on p...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Samara National Research University
2016-07-01
|
| Series: | Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение |
| Subjects: | |
| Online Access: | https://journals.ssau.ru/vestnik/article/viewFile/3076/3015 |
| _version_ | 1818738084982816768 |
|---|---|
| author | V. A. Ushenkin N. A. Egoshkin |
| author_facet | V. A. Ushenkin N. A. Egoshkin |
| author_sort | V. A. Ushenkin |
| collection | DOAJ |
| description | The paper presents an analysis of approaches to using apriori information on relief to improve the quality of spaceborne SAR data interferometric processing. The impact of relief on geometric matching of SAR images is analyzed and an algorithm of fast and high-precision SAR image matching based on polynomial approximation of relief height impact is proposed. The necessity of perpendicular baseline refinement, given the current accuracy of navigation data, is shown. The need of using reference relief to refine the baseline is also shown. The expediency of baseline refinement before and after phase unwrapping is substantiated. The impact of the steepness of relief slope on the coherence estimation is calculated. The existing methods of phase unwrapping are analyzed and an algorithm of their combining is proposed, based on apriori information on each method. A criterion for selecting areas on the interferogram where the true phase varies greatly from pixel to pixel because of the steep relief slope is presented. Phase to - height conversion is also considered. Using publicly available global low resolution DEMs as apriori information on the relief is proposed. |
| first_indexed | 2024-12-18T01:03:19Z |
| format | Article |
| id | doaj.art-cca8b5cb25394701af0b4b66a26e3e93 |
| institution | Directory Open Access Journal |
| issn | 2542-0453 2541-7533 |
| language | English |
| last_indexed | 2024-12-18T01:03:19Z |
| publishDate | 2016-07-01 |
| publisher | Samara National Research University |
| record_format | Article |
| series | Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение |
| spelling | doaj.art-cca8b5cb25394701af0b4b66a26e3e932022-12-21T21:26:19ZengSamara National Research UniversityВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение2542-04532541-75332016-07-0115220821910.18287/2412-7329-2016-15-2-208-2192895Using apriori information in interferometric processing of high resolution sar dataV. A. Ushenkin0N. A. Egoshkin1Ryazan State Radio Engineering UniversityRyazan State Radio Engineering UniversityThe paper presents an analysis of approaches to using apriori information on relief to improve the quality of spaceborne SAR data interferometric processing. The impact of relief on geometric matching of SAR images is analyzed and an algorithm of fast and high-precision SAR image matching based on polynomial approximation of relief height impact is proposed. The necessity of perpendicular baseline refinement, given the current accuracy of navigation data, is shown. The need of using reference relief to refine the baseline is also shown. The expediency of baseline refinement before and after phase unwrapping is substantiated. The impact of the steepness of relief slope on the coherence estimation is calculated. The existing methods of phase unwrapping are analyzed and an algorithm of their combining is proposed, based on apriori information on each method. A criterion for selecting areas on the interferogram where the true phase varies greatly from pixel to pixel because of the steep relief slope is presented. Phase to - height conversion is also considered. Using publicly available global low resolution DEMs as apriori information on the relief is proposed.https://journals.ssau.ru/vestnik/article/viewFile/3076/3015interferometric processingsar imageinterferogramdemcoherenceinterferometric baselinephase unwrapping |
| spellingShingle | V. A. Ushenkin N. A. Egoshkin Using apriori information in interferometric processing of high resolution sar data Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение interferometric processing sar image interferogram dem coherence interferometric baseline phase unwrapping |
| title | Using apriori information in interferometric processing of high resolution sar data |
| title_full | Using apriori information in interferometric processing of high resolution sar data |
| title_fullStr | Using apriori information in interferometric processing of high resolution sar data |
| title_full_unstemmed | Using apriori information in interferometric processing of high resolution sar data |
| title_short | Using apriori information in interferometric processing of high resolution sar data |
| title_sort | using apriori information in interferometric processing of high resolution sar data |
| topic | interferometric processing sar image interferogram dem coherence interferometric baseline phase unwrapping |
| url | https://journals.ssau.ru/vestnik/article/viewFile/3076/3015 |
| work_keys_str_mv | AT vaushenkin usingaprioriinformationininterferometricprocessingofhighresolutionsardata AT naegoshkin usingaprioriinformationininterferometricprocessingofhighresolutionsardata |