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ASTROLABE: A Rigorous, Geodetic-Oriented Data Model for Trajectory Determination Systems

Centre Tecnològic de Telecomunicacions de Catalunya (CTTC/CERCA), Parc Mediterrani de la Tecnologia,Av. Carl Friedrich Gauss 7, Building B4, 08860 Castelldefels, Spain
GeoNumerics S. L., Parc Mediterrani de la Tecnologia, Av. Carl Friedrich Gauss 11, 08860 Castelldefels, Spain
Authors to whom correspondence should be addressed.
ISPRS Int. J. Geo-Inf. 2017, 6(4), 98;
Received: 20 December 2016 / Revised: 9 March 2017 / Accepted: 25 March 2017 / Published: 28 March 2017
PDF [1300 KB, uploaded 29 March 2017]


The constant irruption of new sensors is a challenge for software systems that do not rely on generic data models able to manage change or innovation. Several data modeling standards exist. Some of these address the problem from a generic perspective but are far too complex for the kind of applications targeted by this work, while others focus strictly on specific kinds of sensors. These approaches pose a problem for the maintainability of software systems dealing with sensor data. This work presents ASTROLABE, a generic and extensible data model specifically devised for trajectory determination systems working with sensors whose error distributions may be fully modeled using means and covariance matrices. A data model relying on four fundamental entities (observation, state, instrument, mathematical model) and related metadata is described; two compliant specifications (for file storage and network communications) are presented; a portable C++ library implementing these specifications is also briefly introduced. STROLABE, integrated in CTTC’s trajectory determination system NAVEGA, has been extensively used since 2009 in research and production (real-life) projects, coping successfully with a significant variety of sensors. Such experience helped to improve the data model and validate its suitability for the target problem. The authors are considering putting ASTROLABE in the public domain. View Full-Text
Keywords: trajectory determination systems; data model; genericity; extensibility trajectory determination systems; data model; genericity; extensibility

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Navarro, J.A.; Parés, M.E.; Colomina, I.; Blázquez, M. ASTROLABE: A Rigorous, Geodetic-Oriented Data Model for Trajectory Determination Systems. ISPRS Int. J. Geo-Inf. 2017, 6, 98.

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