精密二等水准测量质量控制研究

介绍了为满足泉州区域似大地水准面精化,通过精密二等水准测量的实践,对其精度及误差进行分析,认为Trimble NiDi能满足二等水准测量的精度,测量成果的精度取决于"二期一等水准测量的成果"、测量的方法和外界条件的影响。同时阐述了在水准测量实施过程、作业期间测量设备的配置及检校等方法减少误差;建议尽量避开使用大环线的一等水准复测点及水准路线上重力点的密度选择等。

Study on Quality Control of Precise Second-Class Leveling Surveying

The paper analyses the accuracy and error of precise second-class leveling measurement in order to achieve the refined regional quasi-geoid in Quanzhou and holds that Trimble NiDi is able to meet the second leveling accuracy.The accuracy of measurement results depends on "phase II results of first order leveling",measurement method and external conditions.The paper also elaborates the leveling process,job period measurement device configuration and calibration method of reducing errors,and recommends to avoid the use of first order leveling of the large link survey points and the density of standard gravity points on the route selection.