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中文摘要：
通过对井下三角高程测量的原理、误差来源及精度分析,指出钢尺量取仪器高和棱镜高的误差对三角高程测量结果的影响,提出一种利用多元线性回归减小该误差影响的算法,并通过实例对三角高程测量结果进行改正,验证该算法用于提高井下三角高程测量精度是可行的,并基本达到四等水准的要求。
英文摘要：
This paper 1）analyzed the theory,error sources and precision of underground trigonometric leveling,2）pointed out that the error of using steel rule to measure the height of instrument and prism has a great impact on trigonometric leveling,3）put forwards an algorithm of Linear and Multiple Regression for reducing the error impact,and 4）corrected the measuring results by experimentation.It is shown that the algorithm for improving the precision of trigonometric leveling is feasible,and basically meets the needs of fourth order leveling.
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