适用于W波段ISAR成像的二维补偿方法

doi:10.3969/j.issn.1001-2400.2016.03.027

Abstract

Abstract:

The problem of migration through the resolution cell (MTRC) in the W-band Inverse Synthetic Aperture radar (ISAR) imaging system is serious. Therefore, a novel two dimensional compensation method is proposed in this paper. Firstly, the cause of migration in ISAR imaging is analyzed. Then, the Keystone transform is used to compensate the MTRC in the range direction. After that, the minimum entropy algorithm is used to estimate the average rotate speed of the target and the rotate speed is used to compensate the cross range direction MTRC of a uniformly rotating target by using the phase correcting method. Finally, the sub-aperture imaging algorithm is used to reduce the cross range MTRC in imaging the maneuvering target. Simulation results show that a high resolution result is achieved and the effectiveness of the two dimensional compensation method is verified.

Key words: W-band, ISAR, keystone transform, phase correction, sub-aperture imaging

CLC Number:

TN955+.1

WEI Yibo;WANG Hui;LI Ning;YU Weidong. Two dimension migration compensation method for W-band ISAR imaging[J].Journal of Xidian University, 2016, 43(3): 155-160.

References

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Two dimension migration compensation method for W-band ISAR imaging

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