The Effect of Instrumental Precision on Optimisation of Displacement Monitoring Networks
2016 (English)In: Acta Geodaetica et Geophysica Hungarica, ISSN 1217-8977, E-ISSN 1587-1037, Vol. 51, no 4, 761-772 p.Article in journal (Refereed) Published
In order to detect the geo-hazards, different deformation monitoring networks are usually established. It is of importance to design an optimal monitoring network to fulfil the requested precision and reliability of the network. Generally, the same observation plan is considered during different time intervals (epochs of observation). Here, we investigate the case that instrumental improvements in sense of precision are used in two successive epochs. As a case study, we perform the optimisation procedure on a GPS monitoring network around the Lilla Edet village in the southwest of Sweden. The network was designed for studying possible displacements caused by landslides. The numerical results show that the optimisation procedure yields an observation plan with significantly fewer baselines in the latter epoch, which leads to saving time and cost in the project. The precision improvement in the second epoch is tested in several steps for the Lilla Edet network. For instance, assuming two times better observation precision in the second epoch decreases the number of baselines from 215 in the first epoch to 143 in the second one.
Place, publisher, year, edition, pages
2016. Vol. 51, no 4, 761-772 p.
Optimal design, GPS network, Landslide, Observation plan
Other Engineering and Technologies not elsewhere specified
Research subject ENGINEERING
IdentifiersURN: urn:nbn:se:hv:diva-8616DOI: 10.1007/s40328-015-0150-4ISI: 000388106100010OAI: oai:DiVA.org:hv-8616DiVA: diva2:866640