SUB-APERTURE FOCUSING ALGORITHM OF GEOSYNCHRONOUS SAR

SUB-APERTURE FOCUSING ALGORITHM OF GEOSYNCHRONOUS SAR

Synthetic Aperture Radar (SAR) on the geosynchronous orbit has the advantage in remote sensing, with high resolution to provide a large coverage in a short visit time. the space-variant coverage and range-azimuth couple of GEO SAR are required to compensate, using the electrical beam steering, the i...

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Main Authors: Y. Zhang, H. Li, H. Xu, B. Hu
Format: Article
Language:English
Published: Copernicus Publications 2013-08-01
Series:The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Online Access:http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-7-W1/205/2013/isprsarchives-XL-7-W1-205-2013.pdf
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spelling doaj-cb5bdfe3550c45cb9f99f5d23f6fa2a82020-11-25T01:00:41ZengCopernicus PublicationsThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences1682-17502194-90342013-08-01XL-7/W120520810.5194/isprsarchives-XL-7-W1-205-2013SUB-APERTURE FOCUSING ALGORITHM OF GEOSYNCHRONOUS SARY. Zhang0H. Li1H. Xu2B. Hu3School of Electronic Information Engineering, Harbin Institute of Technology, Harbin, ChinaSchool of Electronic Information Engineering, Harbin Institute of Technology, Harbin, ChinaSchool of Transportation Engineering, North East Forestry University, Harbin, ChinaSchool of Electronic Information Engineering, Harbin Institute of Technology, Harbin, ChinaSynthetic Aperture Radar (SAR) on the geosynchronous orbit has the advantage in remote sensing, with high resolution to provide a large coverage in a short visit time. the space-variant coverage and range-azimuth couple of GEO SAR are required to compensate, using the electrical beam steering, the irregular data acquisition can be convert to classical SAR modes, such as stripmap, spotlight, sliding spotlight, and terrain observation by progressive scans (TOPS) SAR, the dopper analysis of these work modes of SAR have been studied. Based on deramping processing and improved subaperture chirp scaling algorithm, a novel focusing approach is presented in this paper, whose performance is determined by the work mode, data acquisition and the deramping processing. Data of each mode can be focused by utilizing this presented approach with the information of subapterture centroid time and range rotation center. Simulation results are presented to validate the analysis of the proposed approach.http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-7-W1/205/2013/isprsarchives-XL-7-W1-205-2013.pdf
collection DOAJ
language English
format Article
sources DOAJ
author Y. Zhang
H. Li
H. Xu
B. Hu
spellingShingle Y. Zhang
H. Li
H. Xu
B. Hu
SUB-APERTURE FOCUSING ALGORITHM OF GEOSYNCHRONOUS SAR
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
author_facet Y. Zhang
H. Li
H. Xu
B. Hu
author_sort Y. Zhang
title SUB-APERTURE FOCUSING ALGORITHM OF GEOSYNCHRONOUS SAR
title_short SUB-APERTURE FOCUSING ALGORITHM OF GEOSYNCHRONOUS SAR
title_full SUB-APERTURE FOCUSING ALGORITHM OF GEOSYNCHRONOUS SAR
title_fullStr SUB-APERTURE FOCUSING ALGORITHM OF GEOSYNCHRONOUS SAR
title_full_unstemmed SUB-APERTURE FOCUSING ALGORITHM OF GEOSYNCHRONOUS SAR
title_sort sub-aperture focusing algorithm of geosynchronous sar
publisher Copernicus Publications
series The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
issn 1682-1750
2194-9034
publishDate 2013-08-01
description Synthetic Aperture Radar (SAR) on the geosynchronous orbit has the advantage in remote sensing, with high resolution to provide a large coverage in a short visit time. the space-variant coverage and range-azimuth couple of GEO SAR are required to compensate, using the electrical beam steering, the irregular data acquisition can be convert to classical SAR modes, such as stripmap, spotlight, sliding spotlight, and terrain observation by progressive scans (TOPS) SAR, the dopper analysis of these work modes of SAR have been studied. Based on deramping processing and improved subaperture chirp scaling algorithm, a novel focusing approach is presented in this paper, whose performance is determined by the work mode, data acquisition and the deramping processing. Data of each mode can be focused by utilizing this presented approach with the information of subapterture centroid time and range rotation center. Simulation results are presented to validate the analysis of the proposed approach.
url http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-7-W1/205/2013/isprsarchives-XL-7-W1-205-2013.pdf
work_keys_str_mv AT yzhang subaperturefocusingalgorithmofgeosynchronoussar
AT hli subaperturefocusingalgorithmofgeosynchronoussar
AT hxu subaperturefocusingalgorithmofgeosynchronoussar
AT bhu subaperturefocusingalgorithmofgeosynchronoussar
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