摘要
本文首先阐述了大地网三类设计的意义和研究进展,分析了传统三类设计理论的弊端;针对大地网三类设计中评定网的改进质量的标准问题,引入了功效函数法,并指出了这一方法从总体上给出新增观涮值对原网改进的实际贡献,为改进大地网的累积误差和总体系统误差提供了依据,而且计算十分简单。为了证明本理论的正确性,文中作了大量模拟计算。
This paper after a review of the significance and development of the third-order design (THOD) of the geodetic networks points out drawback of the classical THOD and then gives a discussion of the criteria of geodetic network improvement. In order to evaluate the overall improvement, this paper introduces efficiency function, which gives practical contribution of the optimal improvement of an old network by inserting some new observations. Apart from the easy calcution, the cumulative and systematic errors of the existing network can be revaled by the function. Some analogue computation and analysis are given.
出处
《测绘科学技术学报》
1990年第1期52-57,共6页
Journal of Geomatics Science and Technology
关键词
大地网
三类设计
功效函数
Geodetic Network Third—order Design Efficiency Function
