Especially, the effects of lunar gravity, observation accuracy, orbital error and observation data types on the orbital determination accuracy of the lunar orbiter have been carefully investigated.
重点考察了月球重力场误差、观测量精度、初始时刻的先验轨道误差以及观测资料类型等对环月飞行器定轨精度的影响。
For determination of cycle slips of GPS phase measurements and calculation of satellite orbital coordinates in GPS data processing the Chebyshev polynomial is a good method.
在GPS数据处理中 ，对相位观测值周跳的解算及卫星轨道坐标的拟合推算 ，切比雪夫多项式是比较好的算法之一。
The age of onset, tumor location, and imaging findings provide us with important information for the preoperative diagnosis of an orbital tumor and for the determination of the treatment strategy.
患者的发病年龄，肿瘤所处位置和影像学检查结果为医生明确术前诊断和制定治疗方案提供重要信息。
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