【作者】 宫雨生；

【导师】 徐爱功；

【作者基本信息】 辽宁工程技术大学 ， 大地测量学与测量工程， 2007， 硕士

【摘要】 目前国内外应用GPS定位技术建立各类控制网时,仅解决了平面坐标,高程方面除平原地区采用拟和方法可以得到满意结果外,其余地区高程仍多沿用常规的几何水准测量方法来测定。因此如何有效利用GPS测量的高程信息把大地高转换成正常高,直接为测绘生产服务,实现GPS观测时能同时获得实用的三维坐标,是一个非常实际而又有意义的课题。针对目前的研究现状和存在问题,首先将稳健估计技术引入到了粗差剔除中,从而有效地解决了粗差给测量结果带来的不良影响,提高了成果的可靠性和精确性。然后从几何模型解析逼近的角度出发,重点讨论了解析内插法和数学曲面拟合法,并结合具体实例,进行综合比较、分析和研究,给出了不同拟合模型的精度评价,并提出了具体的结论和建议。最后利用Matlab编程语言实现了数据处理的自动化。更多还原

【Abstract】 International and domestic multifarious control nets in use of GPS’s positioning techniques are only to solve the horizontal coordinates, but the height still follow to use the geometric leveling. Therefore how to make effectively use of the geodetic height’s information of the observation of GPS to get the normal height is becoming important issue. In order to serve surveying and realizing acquirement of three dimensions coordinates in use of GPS is a very actual and meaningful topic.According to current study and existent problem, robust estimation is introduced into detection of outliers firstly. It has effectively solved the problem that gross error brings about negative effect in measurement and enhanced the credibility and the precision of the result. Secondly, the article mainly discusses the method of analytics and the method of mathematics by the geometric model analysis. According to synthetical comparison and analysis, the article combining theory with practice expresses the accurate evaluation of different fit pattern, and then produces concrete conclusion and proposal. At last, automatic data processing is carried out making use of the Matlab language.更多还原