基于混合观测技术的海上长跨距二等水准控制测量的方法总结与探讨

Summary and Discussion on the Method of Second-class Leveling Control Survey of Long Span at Sea Based on Hybrid Observation Technology

跨海控制测量项目中对于跨度较长、地质水文环境较差的测量地段,二等跨海水准控制测量是一个难题。本文基于一些跨海施工项目的技术方案和参考文献,结合精密三角高程测量、精密水准测量、GNSS静态控制测量,对现有二等跨海控制测量中的长跨距高程传递的方法进行了叙述,并总结了一种成本低、适用性强的混合观测方法。

In the cross-sea control survey project,the second-class cross-sea leveling control survey is a difficult problem for the survey area with a long span and poor geological and hydrological environment.Based on some technical schemes and references of cross-sea construction projects,this article combines precise trigonometric leveling,precise levelling,GNSS static control survey,and describes the long-span elevation transfer method in the existing second-class cross-sea control survey,and summarizes a hybrid observation method with low cost and strong applicability.