SAR Observation Error Estimation Based on Maximum Relative Projection Matching
The existing sparse imaging observation error estimation methods are to usually estimate the error of each observation position by substituting the error parameters into the iterative reconstruction process, which has a huge calculation cost. In this paper, by analysing the relationship between imag...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2020/3517834 |
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| _version_ | 1850177347108470784 |
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| author | Y. Zhang B. P. Wang Y. Fang Z. X. Song |
| author_facet | Y. Zhang B. P. Wang Y. Fang Z. X. Song |
| author_sort | Y. Zhang |
| collection | DOAJ |
| description | The existing sparse imaging observation error estimation methods are to usually estimate the error of each observation position by substituting the error parameters into the iterative reconstruction process, which has a huge calculation cost. In this paper, by analysing the relationship between imaging results of single-observation sampling data and error parameters, a SAR observation error estimation method based on maximum relative projection matching is proposed. First, the method estimates the precise position parameters of the reference position by the sparse reconstruction method of joint error parameters. Second, a relative error estimation model is constructed based on the maximum correlation of base-space projection. Finally, the accurate error parameters are estimated by the Broyden–Fletcher–Goldfarb–Shanno method. Simulation and measured data of microwave anechoic chambers show that, compared to the existing methods, the proposed method has higher estimation accuracy, lower noise sensitivity, and higher computational efficiency. |
| format | Article |
| id | doaj-art-bf1f80ceb9e24b61bca9c1fc115aae47 |
| institution | OA Journals |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-bf1f80ceb9e24b61bca9c1fc115aae472025-08-20T02:18:59ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772020-01-01202010.1155/2020/35178343517834SAR Observation Error Estimation Based on Maximum Relative Projection MatchingY. Zhang0B. P. Wang1Y. Fang2Z. X. Song3School of Electronic and Information, Northwestern Polytechnical University, Xi’an 710072, ChinaScience and Technology on UAV Laboratory, Northwestern Polytechnical University, Xi’an 710065, ChinaSchool of Electronic and Information, Northwestern Polytechnical University, Xi’an 710072, ChinaSchool of Electronic and Information, Northwestern Polytechnical University, Xi’an 710072, ChinaThe existing sparse imaging observation error estimation methods are to usually estimate the error of each observation position by substituting the error parameters into the iterative reconstruction process, which has a huge calculation cost. In this paper, by analysing the relationship between imaging results of single-observation sampling data and error parameters, a SAR observation error estimation method based on maximum relative projection matching is proposed. First, the method estimates the precise position parameters of the reference position by the sparse reconstruction method of joint error parameters. Second, a relative error estimation model is constructed based on the maximum correlation of base-space projection. Finally, the accurate error parameters are estimated by the Broyden–Fletcher–Goldfarb–Shanno method. Simulation and measured data of microwave anechoic chambers show that, compared to the existing methods, the proposed method has higher estimation accuracy, lower noise sensitivity, and higher computational efficiency.http://dx.doi.org/10.1155/2020/3517834 |
| spellingShingle | Y. Zhang B. P. Wang Y. Fang Z. X. Song SAR Observation Error Estimation Based on Maximum Relative Projection Matching International Journal of Antennas and Propagation |
| title | SAR Observation Error Estimation Based on Maximum Relative Projection Matching |
| title_full | SAR Observation Error Estimation Based on Maximum Relative Projection Matching |
| title_fullStr | SAR Observation Error Estimation Based on Maximum Relative Projection Matching |
| title_full_unstemmed | SAR Observation Error Estimation Based on Maximum Relative Projection Matching |
| title_short | SAR Observation Error Estimation Based on Maximum Relative Projection Matching |
| title_sort | sar observation error estimation based on maximum relative projection matching |
| url | http://dx.doi.org/10.1155/2020/3517834 |
| work_keys_str_mv | AT yzhang sarobservationerrorestimationbasedonmaximumrelativeprojectionmatching AT bpwang sarobservationerrorestimationbasedonmaximumrelativeprojectionmatching AT yfang sarobservationerrorestimationbasedonmaximumrelativeprojectionmatching AT zxsong sarobservationerrorestimationbasedonmaximumrelativeprojectionmatching |