一种新的星载SAR图像定位方法的研究
doi: 10.3724/SP.J.1146.2005.01440
A New Method to Locate Satellite SAR Imagery
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摘要: 该文应用摄影测量理论，将星载SAR图像近似看作一个画幅式投影传感器获取的等效影像，从而对星载 SAR共线方程进行改进，提出了一种新的定位模型。文中选用一景北京地区RadarSat影像进行实验，结果表明，该模型表达简单，解算稳定，不需要已知轨道信息和成像参数且定位精度保持在像素级范围之内。
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关键词:
- 星载SAR;定位;画幅式
Abstract: In this paper, the satellite SAR imagery is regarded as an image which is acquired from the frame projection sensor approximately based on photogrametry theory. The satellite SAR collinearity equation is revised and a new location model is proposed. As an example, the RadarSat Imagery is tested. Experiment result demonstrates the new model formulation is simple and the resolution is stable without any orbit ephemeris and imaging parameters, and also location accuracy reaches pixels. -
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