千寻位置与RTK技术在电力工程测量中的比较分析

Comparison and Analysis of Qianxun SI and RTK Technique in Electric Power Engineering Survey

对千寻位置与常规实时载波相位差分技术(real time kinematic,RTK)的定位数据质量与精度进行对比试验,研究结果表明:在理想观测条件下,千寻位置的内符合精度、水平精度、垂直精度、位置精度因子(position dilution of precision,PDOP)较常规RTK差,千寻位置的平均可见卫星数目较常规RTK少7.7颗,千寻位置未能接收Galileo卫星数据,Galileo平均可见卫星数目少5.2颗;在不良观测条件下,千寻位置的内符合精度、水平精度、垂直精度、PDOP与常规RTK的差距更明显,Galileo平均可见卫星数目较常规RTK少1.5颗,获得限差内固定解的平均时间是常规RTK的3.2倍,常规RTK的数据采集效率与数据可利用率更高。

In this paper,a comparative test of the quality and accuracy of the positioning data between Qianxun SI and traditional RTK was conducted,the results show that under ideal observation conditions,the inner precision,horizontal accuracy,vertical accuracy and PDOP of Qianxun SI are worse than those of traditional RTK,the average number of visible satellites of Qianxun SI is 7.7 fewer than that of traditional RTK,and the average number of visible satellites of Galileo is 5.2 fewer than that of traditional RTK for Qianxun SI failed to receive Galileo satellite data at present.Under unfavorable observation conditions,the disadvantage of inner precision,horizontal accuracy,vertical accuracy and PDOP between Qianxun SI and traditional RTK is more obvious,the average number of visible satellites of Galileo is 1.5 fewer than that of traditional RTK,the average time to obtain a fixed-solution within tolerance is 3.2 times as long as that of traditional RTK,and the data collection efficiency and data availability of traditional RTK is higher.