GPS控制网的优化设计

Optimal Design of GPS Control Net

随着GPS全球定位系统的发展与壮大,越来越多的工程都在应用GPS来进行布设控制网。但是在实际工程中存在许多影响因素,我们需要进行优化设计来选取最优方案。在已经有很多学者研究控制网的优化设计并作出很多有益结论的情况下,结合GPS测量的特点以及控制网的特性,对以下对象进行了研究与分析:了解到控制网的优化设计指标,掌握各种优化设计的方法,并制订设计方案;根据接收机的标称精度通过相应的数学公式来进行基线向量的方差-协方差阵的计算估计;根据实际工程来进行优化设计,预估几种方案进行分析对比;选取最优的方案对6台接收机进行同步观测,结果满足布设控制点的要求。

With the development and expansion of GPS global positioning systems, more and more projects are using GPS to deploy control networks. However, there are many influencing factors in the actual project. We need to optimize the design to select the optimal solution. Many scholars have studied the optimization design of the control network and made many beneficial conclusions. Combined with the characteristics of GPS measurement and the characteristics of the control network, the following researches and analyses were conducted on the following objects: First of all, what are the optimization design indicators of the control network? Second, master various methods of optimizing design to develop solutions. The calculation of the variance-covariance matrix of the baseline vector can be performed by the corresponding mathematical formula according to the nominal accuracy of the receiver. The calculation of the variance-covariance matrix of the baseline vector can be performed by the corresponding mathematical formula according to the nominal accuracy of the receiver. Optimize the design according to the actual project and estimate several scenarios for analysis and comparison. Finally, the optimal scheme is selected for the six receivers to observe simultaneously and meet the requirement of routing control points.