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1.引言由于白沙导弹靶场 Alkali Flats 和 Dunes 地区地面的反射特性和晴天频度,因此这两个地区就成为非常理想的卫星校正实验场地。从卫星上很容易把该地区的高反射性地面和该地区
1. INTRODUCTION Due to the reflectivity of the ground at Alkali Flats and the Dunes area of the White Sands Missile Range and the frequency of sunny days, these two areas are ideal for satellite calibration. From the satellite it is easy to bring the area’s highly reflective ground and the area