合成孔径雷达与动目标检测

SYNTHETIC APERTURE RADAR AND MOVING TARGET INDICATION

在合成孔径雷达(SAR) 中,雷达与目标之间相对运动的精确知识是相干处理回波形成高方位分辨率图像的基础。因此,在SAR中,对未知运动目标的检测和成像成为一个重要而困难的研究课题。本文较详细地阐述了在SAR 中进行动目标检测的若干方法,包括反射率频移法、多视图像位移法和多天线多通道处理技术。

The problems about the detection of moving objects and observation by the synthetic aperture radars(SAR) are described in this paper.It also explains the moving target indication(MTI) SAR approach using the reflectivity displacement method,the MTI SAR aproach using the multilook image displacement method,and the MTI SAR approach using more than one antenna along the flight direction and an adaptive space time filtering to maximize signal to disturbance ratio.The position and the velocity estimation of moving objects on the ground are also discussed.