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Sensors 2019, 19(8), 1821;

Background and Recent Advances in the Locata Terrestrial Positioning and Timing Technology

School of Civil and Environmental Engineering, University of New South Wales, Sydney 2052, Australia
College of Surveying and Geo-Informatics, Tongji University, Shanghai 200092, China
Author to whom correspondence should be addressed.
Received: 10 March 2019 / Revised: 9 April 2019 / Accepted: 14 April 2019 / Published: 16 April 2019
(This article belongs to the Collection Positioning and Navigation)
PDF [18692 KB, uploaded 16 April 2019]


Global Navigation Satellite System (GNSS) is the most widely used Positioning, Navigation, and Timing (PNT) technology in the world today, but it suffers some major constraints. Locata is a terrestrial PNT technology that can be considered as a type of localised “constellation”, which is able to provide high-accuracy PNT coverage where GNSS cannot be used. This paper presents a comprehensive literature review of the Locata technology and its applications. It seeks to answer questions, such as: (1) What is Locata and how does it work? (2) What makes Locata unique compared with other terrestrial positioning systems? (3) How has Locata been used in different applications for accurate PNT? (4) What are the current challenging issues that may restrict its further adoption for custom-grade navigation in urban environments? View Full-Text
Keywords: Locata; PNT; terrestrial constellation Locata; PNT; terrestrial constellation

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Rizos, C.; Yang, L. Background and Recent Advances in the Locata Terrestrial Positioning and Timing Technology. Sensors 2019, 19, 1821.

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