毕业论文--高精度控制网的一般测量方法实现.doc

PAGE 本 科 毕 业 设 计（论文） 题目 高精度控制网的一般测量方法实现 摘 要　 多种工业目标的测量, 按精度要求不同，需要建立亚毫米亚毫米级甚至更高坐标精度要求的控制网。 控制网建立过程中, 由于使用全站仪，测角精度高，光电测距精度较低，所以角度测量容易满足相应的精度要求, 但却不易选择精密的长度测量手段。以铟瓦尺代替全站仪光电测距，作为长度量测工具，铟瓦尺测距可达到百万分之一的相对精度，可提高距离测量精度。用电子全站仪测角前方交会，测出铟瓦尺上两个刻划点的坐标，由两个刻划点间的精确距离，反求出测站的精确坐标。由测站点的精确坐标，用前方交会测定其他待定点的坐标，就可以为近景摄影测量提供高精度的控制点坐标。理论分析、实验验证及在近景摄影测量中的应用实例证明，该方法简便易行，且能达到精密控制测量相应等级要求精度，较常规测量方法精度有较大提高。 关键词：　 高精度控制网 铟瓦尺 电子经纬仪 前方交会 ABSTRACT Measurement of a variety of industrial targets, according to the precision requirements are different, need to establish sub-millimeter or more sub-millimeter precision coordinate control network. Establish the process control network, the use of total station, high precision angle measurement, optical distance measurement accuracy is lower, so easy to meet the appropriate angle measurement accuracy requirements, but not easy to select the precise length measurements. Total station to replace the indium-watt optical distance scale, as the length measurement tool, indium tile foot distance can be achieved relative precision of parts per million, can improve the distance measurement accuracy. Electronic Total Station with the intersection angle, measured by the two indium-foot carved tile coordinates of points, by two carved the exact distance between points, and anti-calculate the exact coordinates of the station. Exact coordinates from the test site, with the intersection point of the coordinates of the other pending determination, we can provide high-precision photogrammetry control point coordinates. Theoretical analysis, experimental verification and in the close-range photogrammetry application examples show that the method is simple and can achieve the precise control requirements of the appropriate level of measurement accuracy and precision than conventional methods of measurement has improved greatly. Keywords： High-precision control network　　Indium tile foot　　Electronic theodolite　　Resection Intersectio