GAMIT、LGO在工程控制网基线解算中的应用及精度分析

Application and Accuracy Analysis of GAMIT and LGO in Baseline Processing of Engineering Control Network

GNSS静态相对定位技术长期以来在各类工程控制网测量中发挥了重要作用。针对工程控制网起算点分布不均的情况,结合实际工程案例,采用GAMIT、LGO软件进行了基线解算,并通过使用精密全站仪测边、相邻线路联测的方式对成果进行对比分析。结果表明,GAMIT、LGO软件均能满足工程控制网基线解算的需要,GAMIT软件对应成果整体更优,效率更高。对于类似情况下布测高等级工程控制网,使用GAMIT软件在一定程度上可以提高基线解算和控制网精度。

GNSS static relative positioning technology has played an important role in all kinds of engineering control network measurement for a long time.In view of the uneven distribution of the reference points of the engineering control network,combined with the actual engineering case,the baseline processing is carried out by using GAMIT and LGO,and the results are compared and analyzed by using the precise total station to measure the distance and the joint measurement of adjacent lines.The results show that GAMIT and LGO can meet the needs of baseline calculation of engineering control network,and the corresponding results of GAMIT are better and the efficiency is higher.For the layout of high-level engineering control network under similar circumstances,using GAMIT can improve the accuracy of baseline processing and control network to a certain extent.