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Plug & Play GPS
Plug & Play GPS was a NASA ROSES ACCESS funded project to provide no-cost services for generating high precision GPS position timeseries products from continuously operating GPS/GNSS stations from around the globe.
Access to the benefits of having high precision, low-latency position time series from global GPS networks is currently limited by the need to have advanced expertise and systems for data acquisition and processing. We removed these barriers by developing a GPS data analysis system capable of processing all openly available data from over 13,500 continuously operating stations from around the globe. This rigorous and automated system provided processing free of charge and greatly eased access to GPS position time series that can be used for rapid modeling and analysis of natural hazards from earthquakes, tsunamis, volcanoes, hydrologic changes, and other applications. It was envisioned that availability of this unique resource would encourage open sharing of data and products and enable building scientific capacity in areas that were sparsely sampled with GPS such as Africa.
Daily and 5-minute position time series and quality control products, with latency between 2 hours and 1 day, were provided. GNSS data submitted to the UNAVCO archive underwent data ingestion, access, formatting and cataloging of accurate metadata including proper source attribution. The Nevada Geodetic Laboratory at the University of Nevada, Reno, (UNR) picked up hourly and/or daily data files from the UNAVCO archive and processed the data using products provided by the Jet Propulsion Laboratory (JPL), including ultra-rapid GPS orbits and clock parameters, and JPL’s GIPSY OASIS II software. The processed time series were presented in global (IGS08) and North America (NA12) reference frames and post-processed station quality control factors, are cataloged in a Geodetic Seamless Archive Centers (GSAC) database that is searchable and accessible via web browsers or via RESTful web services. To ensure utility of the products, AfricaArray, USGS, and JPL collaborators were included in the testing and evaluation and short courses provided training on how to provide data to the system and utilize products.
As part of the Plug & Play project, UNAVCO accepted high-quality GPS data from contributors who desired processing by the University of Nevada system. Contributed data and derived timeseries products were made publically available following the UNAVCO Data Policy. UNAVCO service included archiving and generation of data and product Digital Object Identifiers (DOIs).
Last modified: 2024-07-08 17:30:30 America/Denver