浅析GPS网形结构对定位精度的影响

摘要

对GPS网采用全面边连式结构、点连式结构和导线网等三种不同网形进行平差分析,得出结果是：全面边连式GPS网形结构强,点位精度高,适用于高精度工程控制网。点连式GPS网网形结构的点位精度与全面边连式网的精度相当,但点连式GPS网可大大减少野外观测和计算工作量。在满足精度要求的情况下,优化GPS网的网形设计,可减少工作量,大大提高生产效率。%Based on the GPS network is a comprehensive edge connected structure, point continued type structure and the wire for three different mesh adjustment analysis, The result is : total edge connected to GPS network structure, position accuracy is high, suitable for high precision engineering control network. Point continued type GPS network structure point precision and overall edge connected network precision considerably, but even the GPS network can greatly reduce the workload of field observation and calcula- tion. To meet the precision request, the net shape design optimization GPS, can reduce workload, improve productivity.