BDS-2、BDS-3短基线单历元双频RTK定位研究

Research on Short Baseline Single Epoch Dual Frequency RTK Positioning of BDS-2 and BDS-3

针对对于BDS-3双频组合短基线RTK定位性能分析较少的问题,本文基于一组自测试短基线实验数据,采用非组合和宽巷组合两种模型进行数据解算,详细分析了BDS-3卫星B1C/B2a、B1I/B3I以及BDS-2+BDS-3定位性能。实验结果表明,任一双频组合短基线定位精度都可以达到厘米级,BDS-3卫星B1I/B3I组合定位精度优于B1C/B2a,BDS-3整体定位精度优于BDS-2,BDS-2+BDS-3 B1I/B3I组合定位精度最高。

Aiming at the problems of fewer analysis on the positioning performance of BDS-3 dual-frequency in combination with short-baseline RTK,based on a set of self-test short-baseline experimental data,this paper uses two models of non-combination and wide-lane combination to solve the data,and analyzes the BDS-3 satellite B1C/B2a,B1I/B3I and BDS-2+BDS-3 positioning performance.Experimental results show that any dual-frequency combined short baseline positioning accuracy can reach centimeter level,BDS-3 satellite B1I/B3I combined positioning accuracy is better than B1C/B2a,BDS-3 overall positioning accuracy is better than BDS-2,the BDS-2+BDS-3 B1I/B3I combination has the highest positioning accuracy.