作者
Lichao Yang, Mengdao Xing, Lei Zhang, Guang-Cai Sun, Yuexin Gao, Zijing Zhang, Zheng Bao
发表日期
2020/6/26
期刊
IEEE Transactions on Geoscience and Remote Sensing
卷号
59
期号
3
页码范围
2095-2115
出版商
IEEE
简介
The microwave photonic (MWP) radar technique is capable of providing ultrawide frequency bandwidth waveforms to generate ultrahigh-resolution (UHR) inverse synthetic aperture radar (ISAR) imagery. Nevertheless, conventional ISAR imaging algorithms have limitations in focusing UHR MWP-ISAR imagery, where high-precision high-order range cell migration (RCM) and phase correction are crucially necessary. In this article, a UHR MWP-ISAR imaging algorithm integrating rotation estimation and high-order motion terms compensation is proposed. By establishing the relationship between parametric ISAR rotation model and high-order motion terms, an average range profile sharpness maximization (ARPSM) is developed to obtain rotation velocity by using nonuniform fast Fourier transform (NUFFT). Second-order range-dependent RCM is corrected with parametric compensation model by using the rotation …
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