ISAR imaging of small craft with roll, pitch and yaw analysis
ISAR imaging of small craft with roll, pitch and yaw analysis
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DOI：
10.1109/radar.2000.851883
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发表时间：
2000-05
期刊：
影响因子：
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通讯作者：
V. Chen;R. Lipps
中科院分区：
文献类型：
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作者：
V. Chen;R. Lipps
本文分析了横摇、俯仰和偏航对小船逆合成孔径雷达(ISAR)成像的影响。由图像投影面和雷达视线单位向量可得到规则运动目标的理想ISAR图像。横摇、俯仰和偏航旋转可以引起时变的多普勒频移，可以通过旋转矩阵和有效旋转矢量进行分析。利用带有4个GPS天线的Trimble Tans矢量系统采集的ISAR数据和横摇、俯仰和偏航数据，研究了旋转运动对ISAR成像的影响。对于有规则运动的目标，如果使用传统的运动补偿，横摇和俯仰运动的扰动可能会导致图像模糊。在这种情况下，补偿扰动的高级成像算法(例如极坐标重新格式化算法)可以改善图像。
In this paper, we analyze the effect of roll, pitch and yaw rotations on inverse synthetic aperture radar (ISAR) imaging of small craft. An ideal ISAR image of a target with regular motion can be derived from the image projection plane and the radar line-of-sight (LOS) unit vector. Roll, pitch and yaw rotations can induce time-varying Doppler shifts that can be analyzed through the rotation matrix and the effective rotation vector. We use a commercial small craft ISAR data accompanied with roll, pitch and yaw data collected by the Trimble Tans Vector system with 4 GPS antennas to study the effect of rotational motion on ISAR imaging. For a target with regular motion, perturbations of roll and pitch motions may make for image blurring if conventional motion compensation is used. In this case, advanced imaging algorithms, such as the polar reformatting algorithm, that compensate the perturbations may improve the image.