摘要
把工业目标作为对象的特高精度工业测量控制网，其平面坐标精度可达到数十μｍ。高程精度也应相应地达到数十μｍ，以满足工业部件检测和放样的要求。此方法已成功地应用于工业测量与放样中。
An industrial control network with high accuracy should be established for measurement and setting out of batches of industrial components. The operational mode with on-line stations on observation pillars have the advantages on tripods in velocity, accuracy and reliablity. Building and actual accuracy (± 0.1mm) Of the industrial horizontal control network with 8 observation pillars have been introduced by Feng, et al (1999). A simple procedure for determining relative elevations of observation pillars is proposed for measuring the heighs of its all neighbor pillars on each station, with height gauge (0. 02mm of mimimal reading) and NA2 model pendulum level made by Leica company, Sweden. As a result, closing error for each circuit in the network is no more than 0.05mm. The key techniques are: ①horizontality of the upper surface of the observation pillar is made less than l'; ②The special marker on the upper surface of the . pillar is used as a target which is used to transmit its height to the station; and ③The distance between neighbor pillars is no more than 9m.
出处
《武汉测绘科技大学学报》
CSCD
2000年第1期70-73,共4页
Geomatics and Information Science of Wuhan University
关键词
特高精度
控制网
工业测量
高度游标卡尺
extra-high accuracy
control net
industrial surveying
height vernier caliper
