利用三角高程代替一等跨河水准的可行性研究

从三角高程测量的计算公式出发,提出了保证测量精度的一些有效措施,从理论上论证了在一定条件下,用三角高程测量可以达到一等水准测量的精度要求。然后在工程实践中分别用两种测量方法进行施测,并进行平差改正与精度分析,结果表明:只要采取一定的措施,用三角高程代替一等跨河水准测量,不仅能保证测量精度,而且可以提高工作效率。

Feasibility Analysis of Replacing the First Class River-crossing Leveling with Trigonometric Leveling

According to the calculation formula of trigonometric leveling,this paper puts forward some effective measures.Based on precision analysis,it is drawn a conclusion in theory that trigonometric leveling can replace the first class river-crossing leveling in the engineering in a certain conditions.Trigonometric leveling and the first class river-crossing leveling are respectively used in the same engineering practice.The actual data achieved can fulfill the precision requirement after error adjustment.As a result,this paper proves that only if a certain measures are taken,trigonometric leveling instead of the first class river-crossing leveling,can not only ensure the precision,but also improve work efficiency.