New Approach for SAR Imaging of Ground Moving Targets Based on a Keystone Transform

作者：Yang Jungang^*; Huang Xiaotao; Jin Tian; Thompson, John; Zhou Zhimin

来源：IEEE Geoscience and Remote Sensing Letters, 2011, 8(4): 829-833.

DOI：10.1109/LGRS.2011.2118739

• Imaging of ground moving targets
• keystone transform
• range cell migration correction
• synthetic aperture radar (SAR)

We propose here a new approach for synthetic aperture radar (SAR) imaging of ground moving targets. The unique characteristic of this approach is that range curvature (i.e., quadratic range migration) can be corrected by a simple processing step. A keystone transform is used to correct range walk (i.e., linear range migration) for all targets without knowing their velocities, and the range curvature is corrected in the range-Doppler domain. The advantage of this approach is that it is simple to implement and can correct range curvature for all targets in one processing step, so that it is computationally efficient. Simulation and experimental SAR data processing results are presented to demonstrate the validity of the proposed approach.

• 出版日期2011-7
• 单位中国人民解放军国防科学技术大学