GPS effectiveness to geotechnical problems in urban areas
DOI:
https://doi.org/10.14195/2184-8394_109_7Keywords:
GPS, Precise position determination, Height determination, Settlement, Soil subsidence, Urban areasAbstract
Several geotechnical studies such as foundation settlement and soil subsidence require a careful and precise monitoring of altitudes and vertical displacements. GPS is a powerful system for determining a point position on terrain, and it has already been used for civil engineering in several countries to precise height determination. A suitable performance of GPS measurement for obtaining height with good precision depends on a few issues related to satellites, signal transmission and, in urban areas case, obstacles around the antenna neighbourhood that interfere in quality and quantify of gathered information. This paper presents a discussion on high precision GPS measurements for small vertical displacements in urban areas, even with obstacles.
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