Then, the troposphere pseudo-range remaining error (TDRE) of differential GPS (DGPS) is defined, its mathematical model is constructed, and the computer simulation of TDRE of DGPS is carried out.
定义了差分GPS（DGPS）的对流层伪距残差的概念，并建立了数学模型。 用计算机对DGPS的对流层伪距残差进行仿真。
The method of RVD relative navigation based on relative differential pseudo range of GPS was studied.
研究基于GPS相对伪距差分技术的RVD相对导航方法。
The monitoring center differentially corrects the user's position data and gives the user's position with high precision just like pseudo range differential GPS system dose.
在监测中心对用户的位置数据进行差分修正，给出与伪距修正同样的高精度用户位置数据。
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