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REVIEW OF STANDARDS, BEST PRATICE, TESTING & CALIBRATION IN GNSS
Review of Standards, Best Practice, Testing and Calibration in Global Navigation Satellite System (GNSS) by David MARTIN, France
Surveyors as professionals must fulfil certain legal, regulatory and/or accuracy requirements for their clients. Typically they will strive to do this in an optimal cost effective way and with the most appropriate equipment for the job at hand. Naturally it requires a good understanding and assurance in the instrumentation employed. Clients want the most from what they pay for. Legislative authorities as well as private and public companies require confidence that the services rendered are in conformity with globally accepted best practice rules. Generally this involves the application of internationally recognized standards.
Considerable efforts have been made concerning testing in the field of surveying. In particular the ISO standard 17123 parts 1 through 8 concerning levels, theodolites, EDM’s, total stations and most recently GNSS field measurement systems in real time kinematic (RTK); have been published. Instrument manufacturers often quote these standards when making reference to their instruments precision. Each of the ISO 17123 standards prescribes test procedures aimed at determining if the instrument is functioning correctly and qualifying its precision and performance.
This paper provides a general overview of standards, best practice, testing and calibration related to GNSS.
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