BDS Stochastic Modeling and Impact Analysis

2018 3rd International Conference on Insulating Materials, Material Application and Electrical Engineering

材料科学;无线电电子学;电工学

Zhang, Xinshuai^1 ; Cai, Wei^1 ; Wang, Bei^1 ; Hou, Yuguo^1

Xi'an Research Inst. of High Tech, Xi'an

710025, China^1

关键词: Carrier-phase measurement;    Double differences;    Elevation models;    Estimation methods;    Impact analysis;    Short base lines;    Single differences;    Solution accuracy;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/452/4/042191/pdf
DOI  :  10.1088/1757-899X/452/4/042191

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Carrier phase measurements are always used in high precision situations. Though in short baseline case, double difference technic can eliminate most of the systematic errors, some errors still remain. The stochastic model of carrier phase describes its stochastic characters. By modeling stochastic model, the solution accuracy and stability can be improved. To investigate the impact of stochastic models, the elevation model and SNR model are established respectively for GEO, IGSO and MEO satellites. Based on these stochastic models, their impact on azimuth solution is analyzed. In this paper, the basic function model is first introduced. Then the single difference (SD) carrier phase model and the estimation method of SD residuals are proposed. Finally, the stochastic models are established based on experiment data and the impact of those models are analyzed.