Extraction Method for Anisotropy Characteristic of Scattering Center in Wide-angle SAR Imagery

GAO Yuexin; LI Zhenyu; SHENG Jialian; XING Mengdao

doi:10.11999/JEIT151261

Volume 38 Issue 8

Sep. 2016

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GAO Yuexin, LI Zhenyu, SHENG Jialian, XING Mengdao. Extraction Method for Anisotropy Characteristic of Scattering Center in Wide-angle SAR Imagery[J]. Journal of Electronics & Information Technology, 2016, 38(8): 1956-1961. doi: 10.11999/JEIT151261

Citation:

GAO Yuexin, LI Zhenyu, SHENG Jialian, XING Mengdao. Extraction Method for Anisotropy Characteristic of Scattering Center in Wide-angle SAR Imagery[J]. Journal of Electronics & Information Technology, 2016, 38(8): 1956-1961. doi: 10.11999/JEIT151261

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Extraction Method for Anisotropy Characteristic of Scattering Center in Wide-angle SAR Imagery

doi: 10.11999/JEIT151261

Funds:

Specialized Research Fund for the Doctoral Program of Higher Education (SRFDP)(20120203130001)

Received Date: 2015-11-09
Rev Recd Date: 2016-04-19
Publish Date: 2016-08-19

Abstract

Abstract

Based on the fact that anisotropy characteristic represents some intrinsic properties of scattering centers, an algorithm for extracting anisotropy characteristic of scattering centers is proposed when wide-angle SAR is used. Firstly, the components of the echo from a single scattering center are analyzed based on attributed scattering center model. Secondly, the estimation of anisotropy characteristic is transformed into an inverse issue of solving variation of single scattering centers amplitude by using identity matrix as orthonormal basis. Finally, the inverse issue is solved under the constraints that the amplitude of scattering centers should be real and continuous. As a result, anisotropy characteristic is extracted from the solution of the inverse issue. Estimation results of both Matlab simulated and electromagnetic computation data validate that the proposed algorithm is not only precise but also robust. Moreover, the proposed method is more efficient compared with traditional methods.
- Wide-angle SAR,
- Scattering center,
- Anisotropy

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References(28)

References

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