Fast time domain imaging for Bistatic SAR including motion errors

Hongtu Xie; Zengping Chen; Shiyou Xu; Fuhai Li; Shaoying Shi; Lin Zhang; Hui Xiao; Guoqian Wang

doi:10.1117/12.2503342

9 August 2018 Fast time domain imaging for Bistatic SAR including motion errors

Hongtu Xie, Zengping Chen, Shiyou Xu, Fuhai Li, Shaoying Shi, Lin Zhang, Hui Xiao, Guoqian Wang

Author Affiliations +

Proceedings Volume 10806, Tenth International Conference on Digital Image Processing (ICDIP 2018); 108063S (2018) https://doi.org/10.1117/12.2503342
Event: Tenth International Conference on Digital Image Processing (ICDIP 2018), 2018, Shanghai, China

Abstract

In this paper, a fast time domain imaging for the bistatic synthetic aperture radar (BSAR) including the motion errors is presented. This method is called the fast factorized backprojection (FFBP) algorithm, which not only precisely handles the large spatial-variance, serious range-azimuth coupling and complicated motion errors, but also greatly improves the imaging efficiency compared with the backprojection (BP) algorithm. In addition, it requires the local beamforming from radar echoes as an intermediate processing in the slant range plane instead of the ground plane, which can be accurately referenced to tracks of the transmitter and receiver considering the platform altitudes. Moreover, it analyzes the bistatic range error considering motion errors to derive the requirement for selecting sizes of the subaperture and subimage, which can offer a near-optimum tradeoff between imaging precision and efficiency. Experiment results prove that the proposed method outperforms the BP algorithm in the terms of the efficiency improvement.

Citation Download Citation

Hongtu Xie, Zengping Chen, Shiyou Xu, Fuhai Li, Shaoying Shi, Lin Zhang, Hui Xiao, and Guoqian Wang "Fast time domain imaging for Bistatic SAR including motion errors", Proc. SPIE 10806, Tenth International Conference on Digital Image Processing (ICDIP 2018), 108063S (9 August 2018); https://doi.org/10.1117/12.2503342

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KEYWORDS

Transmitters

Receivers

Synthetic aperture radar

Technetium

Error analysis

Radar

Detection and tracking algorithms

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