基于迭代Radon-Wigner变换的FMCW-ISAR目标速度估计及速度补偿

发布时间：2018-01-06 11:14

本文关键词：基于迭代Radon-Wigner变换的FMCW-ISAR目标速度估计及速度补偿　出处：《清华大学学报(自然科学版)》2014年04期 　论文类型：期刊论文

【摘要】：在调频连续波逆合成孔径雷达(FMCW-ISAR)成像系统中,目标在扫描周期内的高速运动导致目标一维距离像的畸变及二维成像的模糊。为了获得高质量的ISAR目标成像结果,需对高速目标进行速度估计及补偿。该文针对FMCW-ISAR系统信号模型,提出了一种基于迭代RadonWigner变换对高速非合作目标进行速度估计和速度补偿的方法。仿真结果表明:该方法能够对高速非合作目标的速度进行高精度估计,距离向和方位向速度补偿后可获得理想的ISAR成像结果。
[Abstract]:In FMCW-ISAR imaging system of frequency-modulated continuous wave inverse synthetic aperture radar. The high speed motion of the target during the scanning period leads to the distortion of the one-dimensional range profile and the blurring of the two-dimensional imaging. In order to obtain the high quality ISAR target imaging results. It is necessary to estimate and compensate the velocity of high speed target. This paper aims at the signal model of FMCW-ISAR system. A method of velocity estimation and velocity compensation for high speed non-cooperative targets based on iterative RadonWigner transform is proposed. The simulation results show that:. This method can estimate the velocity of high speed non-cooperative target with high accuracy. The ideal ISAR imaging results can be obtained after the range and azimuth velocity compensation.
【作者单位】：清华大学电子工程系;
【基金】：国家自然科学基金面上项目(61271417)
【分类号】：TN957.52
【正文快照】： 逆合成孔径雷达(inverse synthetic apertureradar,ISAR)因其具有全天时、全天候及高分辨率成像等特点,在卫星、飞机等目标成像领域有非常广阔的应用前景。调频连续波(frequency modula-tion continuous wave,FMCW)雷达相对于传统的脉冲雷达具有测距精度高,无距离模糊,体积小,

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