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本文研究了卫星摄影系统象移补偿速高比计算。从飞机上拍摄地面景物时,象移补偿速高此中的速度为地面相对飞机的速度,通常称为地速。但是,从卫星上拍摄地面照片时,如果把速高比中的速度取为地面相对于卫星的速度,则会导出谬误。为此,作者对速高比的定义进行了推广,对于这种拓广的速高比定义,也能适用于从飞机上拍摄地面景物的速高比计算。本文在推导公式过程中,把地球视为旋转椭球体,卫星轨道为椭圆轨道,导出了计算星下点速度和速高比的公式。最后与把地球视为正球体,忽略轨道偏心率的计算结果相比较,速高比的相对误差不超过0.5%。
This paper studies the satellite camera system to compensate for the compensation of the speed ratio. When shooting from the plane on the ground, the elephant compensates for the high speed of the speed of the plane relative to the aircraft speed, commonly known as ground speed. However, taking ground pictures from satellites, the rate at which the speed ratio is taken to the ground relative to the speed of the satellite leads to a fallacy. To this end, the author has promoted the definition of speed ratio, for which the definition of speed ratio can be applied to the calculation of the speed-height ratio of the ground scene shot from the aircraft. In the process of deriving the formula, the earth is regarded as a spheroid and the orbit of the satellite is an elliptical orbit, and the formula for calculating the velocity and the velocity-to-velocity ratio of the satellite under the star is derived. In the end, the relative error of speed-height ratio does not exceed 0.5% when compared with the calculation of ignoring the orbital eccentricity.