Deploying a Locata network to enable precise positioning in urban canyons

J.-P. Montillet, G.W. Roberts, C. Hancock, X. Meng, O. Ogundipe, J. Barnes

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)


Locata is a new positioning technology developed by the Locata Corporation. At the beginning of 2007, the Institute of Engineering Surveying and Space Geodesy
(IESSG) bought and received a network of Locata transceivers with two rovers. The purpose is to solve the challenges identified when surveying in densemultipath areas (i.e. urban canyons). In this paper, the technology is tested in an urban
canyon scenario on the University park at the University of Nottingham. By comparing Locata position solutions with the true positions calculated with a total station and a carrier- phase GPS, the results show that centimetre-level accuracy
is achievable in difficult environments in the presence of Wi-Fi signals. The rover’s estimated coordinates may diverge in some cases. Finally, a comparison study shows that Real Time Kinematic GPS and Locata technologies have similar
accuracy when both are available.
Original languageEnglish
Pages (from-to)91-103
Number of pages13
JournalJournal of Geodesy
Publication statusPublished - 2009


  • Positioning in urban canyons
  • Locata
  • Network synchronisation


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