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轨道坐标系统
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轨道坐标系统
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Orbit coordinate system
轨道坐标系统
以地球质心为原点,Z轴指向瞬时天极方向,X轴指向历元时刻的平春分点在瞬时赤道面上的投影方向(实为瞬时真赤道上的某一个假想的春分点),Y轴与X轴和Z轴正交,从而构成的右手笛卡儿直角天球坐标系。
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