控制网的优化设计 毕业论文.doc

控制网的优化设计

摘要

　　　优化设计是最优化理论和方法在设计中的应用，力求以最低的成本、最高的效率达到最优的目标。本文通过一系列的分析，对控制网的优化方法进行分析，说明可行性。
　　　为了解决控制网优化设计问题，本论文分两大部分，GPS网的优化设计和GPS网的精度和可靠性，在 GPS网形设计中，首先根据工程的特点和GPS网设计规范的要求，大致确定网的规模，用图论和树的有关算法推导出GPS网形中点、边、异步环之间的关系，然后给出一种生成网形的算法，自动生成初步网形，并用模拟法在顾及精度和可靠性准则下对初步网形进行优化设计，确定最终网形，并按最小路径方法生成观测方案。

关键词： GPS控制网，优化设计，精度，可靠性

OPTIMIZING DESIGNING OF CONTROL NETWORK

ABSTRACT

　　　　The optimization design is a application of the most optimizative   theory and method in the design. It is hopeful that the best target obtained through the expenditure of the fewest cost and the best efficient. The essay is a feasibility report of the optimization design of GPS control network’s methods by a series of analysis.
　　　   This paper consists of two parts: Optimizing designing of GPS control network and the Precision and Reliability of GPS network. When designing a GPS control network ,its scale should be predicted as the project requested and the GPS surveying standard disciplined. According to the relationship among GPS points , edges and nonsynchronous loops, we can use an algorithm of Graphic Theory to produce a network when given the number of points and the maximum edges of each nonsynchronous loop, after being modified by using simulate optimizing method we can draw the ultimate network, then the observation plan can be gained by using the best way algorithm.
　　　
　　　
KEYWORDS：gps control network, optimizing designing, precision, reliability
目录

摘要 2
ABSTRACT 3
1绪论 5
1.1 控制网优化设计的发展历史 5
1.2 GPS控制网的发展历史 7
1.3 GPS网形的特点 8
1.4 GPS系统的应用前景 9
2 GPS网的精度和可靠性 11
2.1 GPS网平差的数学模型 11
2.2 误差的传递与转换 12
2.3 相对点位精度的合理评定 14
2.4 GPS控制网的可靠性 18
3 GPS控制网优化设计 22
3.1 GPS网优化设计的数学模型 22
3.2 一阶段优化设计 24
3.3 三阶段优化设计 27
结论 30
参考文献 31
致谢 32