摘要
采用GNSS手段建立大地控制网是目前工程应用中最为常见的一种形式。GNSS控制网数据处理过程主要包含预处理、基线解算及网平差过程,网平差时需要选择独立基线参与解算,独立基线选取质量高低直接影响最终结果精度。鉴于此,探讨独立基线的选取方法,分别采用顺序连接型、射线型、随机选择等方式选取独立基线参与网平差,并对不同方法选取的独立基线进行网平差后精度分析,为GNSS控制网独立基线选取提供了有益借鉴。
The establishment of geodetic control network by GNSS is the most common form in engineering application.The data processing process of GNSS control network mainly includes preprocessing,baseline solution and network adjustment.During network adjustment,independent baseline needs to be selected to participate in the solution.The quality of independent baseline selection directly affects the accuracy of the final result.In view of this,this paper discusses the selection method of independent baseline,selects independent baseline to participate in network adjustment by means of sequential connection type,radial type and random selection,and analyzes the accuracy of independent baseline selected by different methods after network adjustment,which provides a useful reference for the selection of independent baseline of GNSS control network.
作者
胡玉祥
张洪德
孟庆年
王晓兵
尹相宝
HU Yuxiang;ZHANG Hongde;MENG Qingnian;WANG Xiaobing;YIN Xiangbao(West Coast Geomatics Center of Qingdao Co.,Ltd,Qingdao 266000,China;Qingdao Surveying&Mapping Institute,Qingdao 266032,China;Qingdao Engineering Research Center of Geographical Information of Underground Space,Qingdao 266032,China)
出处
《测绘与空间地理信息》
2023年第8期116-119,共4页
Geomatics & Spatial Information Technology
关键词
GNSS控制网
基线解算
独立基线选取
网平差
精度分析
GNSS control network
baseline solution
independent baseline selection
network adjustment
accuracy analysis
