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Descent trajectory reconstruction and landing site positioning of Chang’E-4 on the lunar farside

机译:嫦娥 - 4在月球游标上的血管轨迹重建与降落网站定位

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Chang'E-4 (CE-4) was the first mission to accomplish the goal of a successful soft landing on the lunar farside. The landing trajectory and the location of the landing site can be effectively reconstructed and determined using series of images obtained during descent when there were no Earth-based radio tracking and the telemetry data. Here we reconstructed the powered descent trajectory of CE-4 using photogrammetrically processed images of the CE-4 landing camera, navigation camera, and terrain data of Chang'E-2. We confirmed that the precise location of the landing site is 177.5991°E, 45.4446°S with an elevation of -5935?m. The landing location was accurately identified with lunar imagery and terrain data with spatial resolutions of 7?m/p, 5?m/p, 1?m/p, 10?cm/p and 5?cm/p. These results will provide geodetic data for the study of lunar control points, high-precision lunar mapping, and subsequent lunar exploration, such as by the Yutu-2 rover.
机译:嫦娥 - 4(CE-4)是第一次完成在农历远边成功着陆的目标的使命。在没有基于地球的无线电跟踪和遥测数据时,可以有效地重建和测定着陆轨迹和着陆位点的位置和确定在下降期间获得的一系列图像确定。在这里,我们使用CE-4着陆相机,导航摄像机和Chang'e-2的地形数据的摄影测量处理图像重建了CE-4的动力下降轨迹。我们确认着陆位点的精确位置为177.5991°E,45.4446°S,高度为-5935Ω米。使用月球图像和地形数据准确地识别着陆位置,其空间分辨率为7?M / P,5?M / P,1?M / P,10?CM / P和5?CM / P。这些结果将为农历控制点,高精度月球映射以及随后的月球勘探提供大地测量数据,例如由yutu-2流动站。

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