控制网选点系统的研究

为适应城市、工矿地区测图和各种工程的需要,无论采用GPS观测或是常规控制方法观测均需要建立一定精度和密度的控制网。根据任务要求,拟订合理的观测方案,在图上设计出一个图形结构较强、点位分布较好的网形。设计好的控制网,是否合乎实际,还需要到实地验证,最终确定控制点的适宜位置。在Visual Basic设计的选点系统里,对控制网的精度与可靠性进行估算,用AutoCAD读入地形图再一次进行图形的编辑与精度查看。正是由于省掉了不必要的选点工作,使得选点工作变得更具条理性。同时网点总数的降低,也节省了一定的经济开销,所以本系统具有一定的经济价值。

RESEARCH ON THE SELECTING SITE SYSTEM OF CONTROL NETWORK

In order to meet demand that the city and the work mineral region measure the diagram and various engineering,need establish the control network of certain accuracy and the densities. According to the mission requirement,draw up to prognosticate the project reasonable,design a sketch structure of on the diagram stronger,order to distribute to compare good of net form. Design the good control network,whether conform to physically,still need the on-the-spot verification,feat position of and certain control point in the end. In the Visual Basic by this method to carry on,then estimate to the accuracy and dependable of the control net,and it can take AutoCAD read into that the geography diagram,carry on editing the sketch and looking in accuracies again. It precisely has saved the nonessential selecting site work,causes the selecting site work to become the more consecution. Dot total depression,also has saved certain economical expenses,therefore this system has certain economic value.