In FMCW-ISAR system, fast-moving targets during the sweep repetition interval results in range profile aberrations and 2-D image blurring. Thus, velocity compensation is needed to acquire good ISAR image quality. This paper presents a method based on the iterative Radon-Wigner Transform to estimate the velocity and compensate for the signal model in FMCW-ISAR systems. Simulations show that the method gives accurate velocity estimates and much better 2-D FMCW-ISAR images by using velocity compensation for both the range and azimuth.
常雯,李增辉,杨健. 基于迭代Radon-Wigner变换的FMCW-ISAR目标速度估计及速度补偿[J]. 清华大学学报(自然科学版), 2014, 54(4): 464-468.
Wen CHANG,Zenghui LI,Jian YANG. Velocity estimation and compensation in FMCW-ISAR based on the iterative Radon-Wigner transform. Journal of Tsinghua University(Science and Technology), 2014, 54(4): 464-468.
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