基于低成本单频u-blox接收机的GPS/BDS定向性能分析

Performance Analysis of GPS/BDS Attitude Determination for Low-Cost Single-Frequency u-blox Receivers

针对高精度GNSS定向应用场景,通过实验对比对低成本单频u-blox接收机的数据质量和解算精度。结果表明,u-blox接收机GPS、BDS观测值的信噪比略低于测量型接收机;伪距精度分别为0.91 m、0.56 m,相位精度分别为1.35 cm、1.20 cm。在静态观测环境下,u-blox的定向精度可以达到航向0.2°/m和俯仰0.4°/m;动态环境下解算结果稍差,但也可以达到航向0.3°/m和俯仰0.6°/m,略低于高成本测量型接收机单频数据的实时动态定向精度。

This paper analyzes the observation quality of the low-cost single-frequency u-blox receiver and evaluates its attitude determination precision by experimental comparison.The results,based on real data,show that the SNR of GPS,BDS observations collected by u-blox is slightly lower than a surveying receiver;pseudorange accuracies of GPS,BDS observations are 0.91 m,0.56 m,phase accuracies are 1.13 cm,1.20 cm,respectively.The orientation precision of the u-blox receiver can reach 0.2°/m and 0.4°/m of heading and pitch in a static environment,while in a dynamic environment it can reach 0.3°/m and 0.6°/m,which is slightly worse than that of the single-frequency resolution of high-cost surveying receiver.