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。
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。
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