Chapter 3 analyzes numerically the effects for orbit calculation caused by orbital perturbation, parameter error and so on. A precise mathematical model of orbit calculation is given.
第三章通过数值法分析了各项轨道摄动和参数误差等因素的对轨道计算的影响，给出了精确的月球探测器轨道计算数学模型。
The main function of orbit calculation is to simulate the flight procedure of spacecraft, before that, the dynamics model of orbit must be established.
轨道计算主要用来模拟飞行器的飞行过程，前提是建立动力学模型。
The main function of orbit calculation is to simulate the flight procedure of spacecraft, before that, the dynamics model of orbit must be established.
轨道计算主要用来模拟飞行器的飞行过程，前提是建立动力学模型。
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