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雷达遥感器能为地质工作提供有用的构造信息,因为其后向散射特征与地形和地表粗糙度有关,但这些特征取决于遥感器的成像参数,如视角和波长。星载雷达的性能到目前为止还是很有限的,没有提供地质人员所需的灵活的成像参数。加拿大最近发射的RADARSAT是第一颗装备有不同成像模式合成孔径雷达(SAR)的地球观测卫星、入射角、空间分辨率、成像面积和观测方向有多种选择。RADARSAT的目的包括用标准的成像扫描条带获取全球的立体数据。在地质填图和勘探方面,RADARSAT可通过调整成像参数使之与地物性质和所需信息相一致,本文对RADARSAT数据的这些优点进行了论述。
Radar remote sensors provide useful tectonic information for geological work because of the backscatter characteristics associated with topography and surface roughness, but these characteristics depend on the remote sensor’s imaging parameters such as viewing angle and wavelength. The performance of spaceborne radars has so far been limited, providing no flexible imaging parameters needed by geologists. RADARSAT, recently launched in Canada, is the first Earth observation satellite equipped with Synthetic Aperture Radars (SARs) of different imaging modes. There are many options for angle of incidence, spatial resolution, imaging area and direction of observation. The purpose of RADARSAT includes obtaining global stereo data with standard imaging scan bands. With respect to geological mapping and exploration, RADARSAT can address these features of RADARSAT data by aligning imaging parameters with the nature of the features and the information required.