Method for high-resolution SAR imaging based on inverse radon transform

• Main Authors: Zhaofa Wang, Yong Wang, Liang Xu
• Format: Article
• Language: English
• Published: Wiley 2019-09-01
• Series: The Journal of Engineering
• Subjects: synthetic aperture radar; radon transforms; radar imaging; inverse transforms; image resolution; radar resolution; vibrations; high-frequency platform vibration; synthetic aperture radar signal processing; carrier frequency; high frequency band; focus performance; vibration parameters; high-resolution sar imaging; inverse radon transforms
• Online Access: https://digital-library.theiet.org/content/journals/10.1049/joe.2019.0576

The influence of high-frequency platform vibration needs to be considered in the synthetic aperture radar (SAR) signal processing, especially at the case that the carrier frequency is in high frequency band. The existence of the vibration will cause the SAR images not to focus. In this study, a novel method for SAR imaging is proposed to enhance the focus performance, where the inverse radon transform based method is employed to estimate the vibration parameters. The effectiveness of the proposed method is verified by simulation results.