随机模型对BDS-3新频率单点定位影响分析

Influence Analysis of Stochastic Model on Single Point Positioning of BDS-3 New Frequency

为详细分析随机模型对BDS-3单点定位精度的影响,本文基于RTKLIB软件编译实现了高度角、信噪比以及高度角+信噪比3种随机模型,并分析了3种随机模型对BDS-3新频率B1C、B2a伪距单点定位和静态精密单点定位精度的影响。实验结果表明,3种随机模型对B1C、B2a伪距单点定位影响较小,其解算定位精度由高到低分别为:高度角+信噪比、高度角、信噪比;3种随机模型对B1C、B2a静态精密单点定位影响略大,其解算定位精度由高到低分别为:高度角+信噪比、信噪比、高度角。

In order to analyze the influence of the random model on the single-point positioning accuracy of BDS-3 in detail,this paper compiles and implements three random models of altitude angle,signal-to-noise ratio,and altitude angle+signal-to-noise ratio based on RTKLIB software,and analyzes the three random models.Influence on the BDS-3 new frequency B1C,B2a pseudo-range single-point positioning and static precision single-point positioning accuracy.The experimental results show that the three stochastic models have little effect on the B1C and B2a pseudo-range single-point positioning.The three stochastic models solve the positioning accuracy from high to low:altitude angle+signal-to-noise ratio,altitude angle,signal-to-noise ratio,the three stochastic models have a slightly greater impact on B1C and B2a static precise single-point positioning.The three stochastic models solve the positioning accuracy from high to low:altitude angle+signal-to-noise ratio,signal-to-noise ratio,and altitude angle.