Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/156129
Title: A Backprojection-Based Imaging for Circular Synthetic Aperture Radar
Authors: Leping Chen;Daoxiang An;Xiaotao Huang
Year: 2017
Publisher: IEEE
Abstract: Circular synthetic aperture radar (CSAR) has attracted much attention in the field of high-resolution SAR imaging. However, the CSAR image focusing is affected by the motion deviations of platform. In the processing of experimental CSAR data to deal with motion errors, the main way is using setup calibrators, which restricts its widespread applications. In this paper, based on the estimation of motion errors, an autofocus CSAR imaging strategy is proposed without using any setup calibrator. The first step is to split the entire aperture into several subapertures, the second step is to process the data in subapertures with an autofocus backprojection method, and the last step is to obtain the final CSAR image by merging the subimages obtained from the subaperture processing. The CSAR data processing results prove that the proposed strategy can remove the motion errors accurately and acquire well-focused CSAR images.
URI: http://localhost/handle/Hannan/156129
volume: 10
issue: 8
More Information: 3547,
3555
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7891624.pdf1.95 MBAdobe PDF
Title: A Backprojection-Based Imaging for Circular Synthetic Aperture Radar
Authors: Leping Chen;Daoxiang An;Xiaotao Huang
Year: 2017
Publisher: IEEE
Abstract: Circular synthetic aperture radar (CSAR) has attracted much attention in the field of high-resolution SAR imaging. However, the CSAR image focusing is affected by the motion deviations of platform. In the processing of experimental CSAR data to deal with motion errors, the main way is using setup calibrators, which restricts its widespread applications. In this paper, based on the estimation of motion errors, an autofocus CSAR imaging strategy is proposed without using any setup calibrator. The first step is to split the entire aperture into several subapertures, the second step is to process the data in subapertures with an autofocus backprojection method, and the last step is to obtain the final CSAR image by merging the subimages obtained from the subaperture processing. The CSAR data processing results prove that the proposed strategy can remove the motion errors accurately and acquire well-focused CSAR images.
URI: http://localhost/handle/Hannan/156129
volume: 10
issue: 8
More Information: 3547,
3555
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7891624.pdf1.95 MBAdobe PDF
Title: A Backprojection-Based Imaging for Circular Synthetic Aperture Radar
Authors: Leping Chen;Daoxiang An;Xiaotao Huang
Year: 2017
Publisher: IEEE
Abstract: Circular synthetic aperture radar (CSAR) has attracted much attention in the field of high-resolution SAR imaging. However, the CSAR image focusing is affected by the motion deviations of platform. In the processing of experimental CSAR data to deal with motion errors, the main way is using setup calibrators, which restricts its widespread applications. In this paper, based on the estimation of motion errors, an autofocus CSAR imaging strategy is proposed without using any setup calibrator. The first step is to split the entire aperture into several subapertures, the second step is to process the data in subapertures with an autofocus backprojection method, and the last step is to obtain the final CSAR image by merging the subimages obtained from the subaperture processing. The CSAR data processing results prove that the proposed strategy can remove the motion errors accurately and acquire well-focused CSAR images.
URI: http://localhost/handle/Hannan/156129
volume: 10
issue: 8
More Information: 3547,
3555
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7891624.pdf1.95 MBAdobe PDF