大地测量学基础计算教学系统开发与应用

Development and applications of foundational calculation system in geodesy

大地测量方法和手段日新月异,其课程特点是概念多、公式又多又长,几何元素的数值位数,一般超过12位,多数计算要求保留15位小数,普通计算器不能达到计算精度,甚至结果是错误的,像高斯正反算计算精度不高。本系统开发的主要目的是将《大地测量学基础》中繁琐、复杂的基本计算集成,为课程教学、毕业设计及测绘生产服务。系统用MATLAB语言编写,明显特点有二,数据输出全面,并且以熟悉的WORD文档形式输出计算报告,报告内容包括起算数据、计算中间过程每个符号的值、最后结果;第二个特点是边计算边学习,系统提供大地测量的重要概念定义、计算的数学模型、出模拟计算题等辅助功能。通过5年的教学实践和测绘生产应用,证明本系统计算正确,有一定应用价值。

The theory and technology of Geodesy are all growing with every day. The character of geodesy includes many conceptions, many and long formulas. The computing accuracy of the geometrical element usually demands fifteen decimal places. The common calculator can not reach the accuracy, sometimes even gain errors. The main aim of this system is to integrate the complicated basic calculation in Geodesy to serve the teaching, graduation project and surveying and mapping production. The system which was accomplished with MATLAB programming language has two mean characters： exporting data are comprehensive, and the exported calculating report includes original data, the process and the results which can be stored in WORD document; this system offers plentiful auxiliary functions such as geodetic important conceptions, mathematical-model, practice tests and so on. Through five years＇ work practice and teaching practice the system has been proved to be computing right and also has much applicable value.