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Invention Grant
US08854261B2 Parameter calculating method, long-term prediction orbit data providing method, information providing device, and positioning system 有权
参数计算方法，长期预测轨道数据提供方法，信息提供装置和定位系统

Parameter calculating method, long-term prediction orbit data providing method, information providing device, and positioning system
Abstract:
A parameter calculating method includes: setting lengths of prediction target terms as divisions of a predetermined effective period of a satellite orbit as variable lengths; and calculating a parameter of a predetermined orbit model expression used for approximating the satellite orbit based on prediction position data containing prediction positions of a positioning satellite in time series for each of the prediction target terms.
Abstract(Chinese):

参数计算方法包括：将预测目标项的长度设置为卫星轨道的预定有效周期的分数作为可变长度; 并且基于预测位置数据计算用于近似卫星轨道的预定轨道模型表达式的参数，该预测位置数据包含针对每个预测目标项的时间序列中的定位卫星的预测位置。

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