融合GNSS兼容频率静态PPP对流层延迟评估

Integrated GNSS Compatible Frequency Static PPP Tropospheric Delay Evaluation

为进一步评估周边对流层延迟,本文基于中国境内以及周边5个MGEX跟踪站,对比分析BDS-3及与BDS-3兼容频率组合静态精密单点定位精度以及评估对流层延迟结果。实验结果表明,双系统组合能有效改善卫星状况,BDS-3以及其他情况静态精密单点定位水平精度优于1.5 cm,高程定位精度优于3 cm,评估对流层延迟结果较好,JFNG站评估对流层延迟结果误差在1 cm以内,其余测站评估对流层延迟结果误差在1—2 cm之间。

In order to further evaluate the surrounding tropospheric delay,this paper compares and analyzes the static precision single-point positioning accuracy of BDS-3 and BDS-3 compatible frequency combination based on 5 domestic and foreign MGEX tracking stations,and evaluates the results of tropospheric delay.The experimental results show that the dual system combination can effectively improve the satellite status.The static precision single-point positioning accuracy of BDS-3 and other situations is better than 1.5 cm,and the altitude positioning accuracy is better than 3 cm.The evaluation result of tropospheric delay is good.JFNG station evaluates tropospheric delay,and the error of the result is within 1 cm.The error of the tropospheric delay evaluated by other stations is between 1 and 2 cm.