Study on Polarimetric SAR Range Ambiguity Computation for Distributed Targets

Hong Wen; Yang Shi-lin; Li Yang; Zhang Jing-jing; Guo Sheng-long

doi:10.11999/JEIT141234

Volume 37 Issue 6

Jun. 2015

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Article Navigation > Journal of Electronics & Information Technology > 2015 > 37(6): 1437-1442

Hong Wen, Yang Shi-lin, Li Yang, Zhang Jing-jing, Guo Sheng-long. Study on Polarimetric SAR Range Ambiguity Computation for Distributed Targets[J]. Journal of Electronics & Information Technology, 2015, 37(6): 1437-1442. doi: 10.11999/JEIT141234

Citation:

Hong Wen, Yang Shi-lin, Li Yang, Zhang Jing-jing, Guo Sheng-long. Study on Polarimetric SAR Range Ambiguity Computation for Distributed Targets[J]. Journal of Electronics & Information Technology, 2015, 37(6): 1437-1442. doi: 10.11999/JEIT141234

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Study on Polarimetric SAR Range Ambiguity Computation for Distributed Targets

doi: 10.11999/JEIT141234

Received Date: 2014-09-23
Rev Recd Date: 2015-02-13
Publish Date: 2015-06-19

Abstract

Abstract

A new approach is proposed to compute spaceborne SAR range ambiguity using covariance matrix. The causation of range ambiguity of spaceborne SAR and the ambiguous energy difference between like-polarized channel and cross-polarized channel are analyzed. In current study, it is common to use polarimetric scattering matrix to compute range ambiguity. Because of the speckle, the scattering matrix of a pixel can not describe the distributed targets precisely. Therefore, it is hard to decide the range ambiguity signal ratio of adjacent pixels. In this paper, the formulation of computing range ambiguity is derived for distributed targets first. Second, this new method is tested by using Radarsat-2 data. The results show that covariance matrix can effectively illustrate distributed targets. The results are smooth and confirmed. The new method is rational to compute range ambiguity of distributed targets.
- SAR,
- Distributed targets,
- Polarimetric SAR,
- Range ambiguity

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References(22)

References

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