Author:
AbdAllah Ahmed A. G.,Wang Zhengtao
Abstract
AbstractGeodetic networks are important for most engineering projects. Generally, a geodetic network is designed according to precision, reliability, and cost criteria. This paper provides a new criterion considering the distances between the Net Points (NPs) and the Project Border (PB) in terms of Neighboring (N). Optimization based on the N criterion seeks to relocate the NPs as close as possible to PB, which leads to creating shorter distances between NPs or those distances linking NPs with Target Points (TPs) to be measured inside PB. These short distances can improve the precision of NPs and increase the accuracy of observations and transportation costs between NPs themselves or between NPs and TPs (in real applications). Three normalized N objective functions based on L1, L2, and L∞‒norms were formulated to build the corresponding N optimization models, NL1; NL2; and NL∞ and to determine the best solution. Each model is subjected to safety, precision, reliability, and cost constraints. The feasibility of the N criterion is demonstrated by a simulated example. The results showed the ability of NL∞ to determine the safest positions for the NPs near PB. These new positions led to improving the precision of the network and preserving the initial reliability and observations cost, due to contradiction problems. Also, N results created by all N models demonstrate their theoretical feasibility in improving the accuracy of the observations and transportation cost between points. It is recommended to use multi-objective optimization models to overcome the contradiction problem and consider the real application to generalize the benefits of N models in designing the networks.
Publisher
Springer Science and Business Media LLC
Reference31 articles.
1. Grafarend, E. W. Optimization of geodetic networks. Can. Surv. 28, 716–723 (1974).
2. Eshagh, M. & Kiamehr, R. A strategy for optimum designing of the geodetic networks from the cost, reliability and precision views. Acta Geod. Geophys. Hungarica 42, 297–308 (2007).
3. Kuang, S. Geodetic Network Analysis and Optimal Design: Concepts and Applications (Ann Arbor Press Inc, 1996).
4. Baarda, W. S-transformations and criterion matrices. (Netherlands Geodetic Commission, 1973).
5. Dare, P. & Saleh, H. GPS network design: Logistics solution using optimal and near-optimal methods. J. Geod. 74, 467–478 (2000).
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献