GNSS receiver for transmission corridor survey

February 13th, 2018, Published in Articles: PositionIT

The Spectra Precision SP60 GNSS receiver has been selected to perform survey work for construction of a new 450 km long, 225/90 kV transmission line that connects Mauritania’s capital Nouakchott and to Nouadhibou in the south. The Mauritanian electricity company, SOMELEC, through its contracting company, awarded the sub-contract for survey work to geospatial firm ETAFAT. Difficult work conditions, including high temperatures and the lack of existing control points, were key to the firm’s selection of the SP60 receiver, which met and exceeded the required +/- 15 cm order of accuracy. GeoTechnologies, Spectra Precision’s Moroccan distributor, supplied the firm with the receivers. Due to the absence of existing benchmarks along the corridor, the receiver’s RTX was crucial to ensure homogeneity in the coordinate reference frame between the two cities. The RTX technology leverages real-time data from a global tracking station network to compute and relay satellite orbit, satellite clock, and other system adjustments to deliver real-time, high-accuracy corrections even in remote locations.

Contact Sean Dane, Optron, Tel 031 566-6221,