请参考系列概述以获得详细信息。

Please refer to the series overview for more information.

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本文详细地论述了与GPS导航定位系统一系列有关的参考系统：时间系统、坐标系统和力模型系统。

Firstly, a series of reference systems, related to GPS navigation positioning system, such as timing system, reference frame and force model system, are discussed in detail.

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