When the aperture diameter of an optical system is fixed with the same orbitheight, the resolution of ground objects can be improved by increasing the focal length.
According to the target spacecraft's orbitheight and the chaser spacecraft's orbitheight, the design method of the target's initial phase for the rendezvous orbit was presented.
根据目标飞行器轨道高度和追踪飞行器入轨轨道高度，给出了目标飞行器交会对接轨道初始相位的设计方法。
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The TV report said the Rasad satellite, developed by Iran's aerospace agency, weighs 15.3kg and has been designed to orbit the Earth 15 times a day at a height of 160 miles.