On compensation of Migration Through Resolution Cells in ISAR imaging

Changzheng Ma, B. Ng, Shun-sheng Zhang, T. Yeo, Zhoufeng Liu, Qiang Guo
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引用次数: 1

Abstract

In Inverse Synthetic Aperture Radar (ISAR) imaging, with the increase of range and cross-range resolutions, scat-terers move through resolution (range and cross-range) cells even in short coherent processing interval. This limits the resolution obtained and degrades the image quality for the conventional Range-Doppler method. In this paper, the Migration Through Range Resolution Cell (MTRRC) is mitigated by forming the cross-range image for every frequency, while the Migration Through Cross-range Resolution Cell (MTCRC) is mitigated by using dechirp processing.
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ISAR成像中分辨率单元偏移补偿的研究
在逆合成孔径雷达(ISAR)成像中,随着距离和跨距离分辨率的增加,散射体即使在较短的相干处理间隔内也会穿过分辨率(距离和跨距离)单元。这限制了传统距离多普勒方法获得的分辨率并降低了图像质量。本文通过形成每个频率的跨距离图像来缓解通过距离分辨率单元的迁移(MTRRC),而通过跨距离分辨率单元的迁移(MTCRC)采用去噪处理来缓解。
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