本论文分析和比较了多种遥感图像的定位方法后，指出了距离—多普勒(R - D)定位原理作为SAR图像象素绝对定位模型的优势。
After comparison of several location methods of remote sensing image, Range-Doppler (R-D) theory is proved to have advantages as the footstone of pixel location model of SAR image.
摘要 ：使用距离多普勒模型进行SAR影象几何校正时，卫星轨道误差、系统成像参数误差和DEM高程的误差会影响几何校正精度。
Abstract : When using the Range-Doppler model for SAR image geometric correction, the error of satellite orbit, imaging parameter and DEM elevation will affect the geometric correction accuracy.
对其中一些诸如回波信号模型、分辨率、距离徙动等关键问题进行了介绍，并详细推导了标准的距离-多普勒算法。
Some crucial issues, such as model of echo, resolution and range migration are explained and the standard rd imaging algorithm is deduced.
对其中一些诸如回波信号模型、分辨率、距离徙动等关键问题进行了介绍，并详细推导了标准的距离-多普勒算法。
Some crucial issues, such as model of echo, resolution and range migration are explained and the standard rd imaging algorithm is deduced.
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