In this paper, various correlative GPS space reference frames in GPS measurement field and the principle of GPS signal constitution are introduced first.
本文首先介绍了GPS测量应用中的各种时空坐标系统，以及GPS信号构成等基本知识。
In this paper, various correlative GPS space reference frames in GPS measurement field and the principle of GPS signal constitution are introduced first.
本文首先介绍了GPS测量应用中的各种时空坐标系统，以及GPS信号构成等基本知识。
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