Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/123406
Title: Fast Factorized Backprojection Algorithm for One-Stationary Bistatic Spotlight Circular SAR Image Formation
Authors: Hongtu Xie;Shaoying Shi;Daoxiang An;Guangxue Wang;Guoqian Wang;Hui Xiao;Xiaotao Huang;Zhimin Zhou;Chao Xie;Feng Wang;Qunle Fang
Year: 2017
Publisher: IEEE
Abstract: In this paper, a fast factorized backprojection (FFBP) algorithm is proposed for the one-stationary bistatic spotlight circular synthetic aperture radar (OS-BSCSAR) data processing. This method represents the subimages on polar grids in the slant-range plane instead of the ground plane, which can be accurately referenced to the tracks of both transmitter and receiver. It can not only accurately accommodate the complicated circular track including the motion error, scene topographic information, large spatial variances and significant range-azimuth coupling of the echo data, but also improve the imaging efficiency compared with the backprojection (BP) algorithm. First, OS-BSCSAR imaging geometry is provided, and then the bistatic BP algorithm for the OS-BSCSAR imaging is derived to provide a basis for the proposed FFBP algorithm. Second, based on the subaperture imaging model, the polar grids for calculating the subimages are defined, and the sampling requirements for the polar grids are derived from the viewpoint of the bandwidth, which can offer the near-optimum tradeoff between the imaging quality and the imaging efficiency. Finally, implementation and computational burden of the proposed FFBP algorithm is discussed, and then the speed-up factor of the proposed FFBP algorithm with respect to the bistatic BP algorithm is derived. Experiment results are given to prove the correctness of the theory analysis and validity of the proposed FFBP algorithm.
URI: http://localhost/handle/Hannan/123406
volume: 10
issue: 4
More Information: 1494,
1510
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7805267.pdf1.27 MBAdobe PDF
Title: Fast Factorized Backprojection Algorithm for One-Stationary Bistatic Spotlight Circular SAR Image Formation
Authors: Hongtu Xie;Shaoying Shi;Daoxiang An;Guangxue Wang;Guoqian Wang;Hui Xiao;Xiaotao Huang;Zhimin Zhou;Chao Xie;Feng Wang;Qunle Fang
Year: 2017
Publisher: IEEE
Abstract: In this paper, a fast factorized backprojection (FFBP) algorithm is proposed for the one-stationary bistatic spotlight circular synthetic aperture radar (OS-BSCSAR) data processing. This method represents the subimages on polar grids in the slant-range plane instead of the ground plane, which can be accurately referenced to the tracks of both transmitter and receiver. It can not only accurately accommodate the complicated circular track including the motion error, scene topographic information, large spatial variances and significant range-azimuth coupling of the echo data, but also improve the imaging efficiency compared with the backprojection (BP) algorithm. First, OS-BSCSAR imaging geometry is provided, and then the bistatic BP algorithm for the OS-BSCSAR imaging is derived to provide a basis for the proposed FFBP algorithm. Second, based on the subaperture imaging model, the polar grids for calculating the subimages are defined, and the sampling requirements for the polar grids are derived from the viewpoint of the bandwidth, which can offer the near-optimum tradeoff between the imaging quality and the imaging efficiency. Finally, implementation and computational burden of the proposed FFBP algorithm is discussed, and then the speed-up factor of the proposed FFBP algorithm with respect to the bistatic BP algorithm is derived. Experiment results are given to prove the correctness of the theory analysis and validity of the proposed FFBP algorithm.
URI: http://localhost/handle/Hannan/123406
volume: 10
issue: 4
More Information: 1494,
1510
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7805267.pdf1.27 MBAdobe PDF
Title: Fast Factorized Backprojection Algorithm for One-Stationary Bistatic Spotlight Circular SAR Image Formation
Authors: Hongtu Xie;Shaoying Shi;Daoxiang An;Guangxue Wang;Guoqian Wang;Hui Xiao;Xiaotao Huang;Zhimin Zhou;Chao Xie;Feng Wang;Qunle Fang
Year: 2017
Publisher: IEEE
Abstract: In this paper, a fast factorized backprojection (FFBP) algorithm is proposed for the one-stationary bistatic spotlight circular synthetic aperture radar (OS-BSCSAR) data processing. This method represents the subimages on polar grids in the slant-range plane instead of the ground plane, which can be accurately referenced to the tracks of both transmitter and receiver. It can not only accurately accommodate the complicated circular track including the motion error, scene topographic information, large spatial variances and significant range-azimuth coupling of the echo data, but also improve the imaging efficiency compared with the backprojection (BP) algorithm. First, OS-BSCSAR imaging geometry is provided, and then the bistatic BP algorithm for the OS-BSCSAR imaging is derived to provide a basis for the proposed FFBP algorithm. Second, based on the subaperture imaging model, the polar grids for calculating the subimages are defined, and the sampling requirements for the polar grids are derived from the viewpoint of the bandwidth, which can offer the near-optimum tradeoff between the imaging quality and the imaging efficiency. Finally, implementation and computational burden of the proposed FFBP algorithm is discussed, and then the speed-up factor of the proposed FFBP algorithm with respect to the bistatic BP algorithm is derived. Experiment results are given to prove the correctness of the theory analysis and validity of the proposed FFBP algorithm.
URI: http://localhost/handle/Hannan/123406
volume: 10
issue: 4
More Information: 1494,
1510
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7805267.pdf1.27 MBAdobe PDF