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Plug & Play GPS

Plug & Play GPS is 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 are taking steps to remove 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 will provide processing free of charge and will greatly ease 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 is envisioned that availability of this unique resource will encourage open sharing of data and products and enable building scientific capacity in areas that are currently 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, will be provided. GNSS data submitted to the UNAVCO archive undergoes data ingestion, access, formatting and cataloging of accurate metadata including proper source attribution. the Nevada Geodetic Laboratory at the University of Nevada, Reno, (UNR) will pick up hourly and/or daily data files from the UNAVCO archive and process 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 are 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 newly developed simple RESTful web services. To ensure utility of the products, AfricaArray, USGS, and JPL collaborators are included in the testing and evaluation and short courses will provide training on how to provide data to the system and utilize products.

A beta version of the UNR Plug and Play product GSAC is now available for open testing. NOTE: This service will be moved when UNR GSAC becomes fully operational.

As part of the Plug & Play project, UNAVCO will accept high-quality GPS data from contributors who desire processing by the University of Nevada system. Contributed data and derived timeseries products will be publically available following the UNAVCO Data Policy. UNAVCO service includes archiving and generation of data and product Digital Object Identifiers (DOIs). To contribute your GPS data for UNR processing, begin by completing the application form.

UNR generates daily position timeseries files and plots such as the one shown for a representative continuous station (FG08) in Africa. Shown from top to bottom are the north, east and vertical components of motion. When downloaded hourly, 5-minute sampled timeseries are generated with a latency of less than 2 hours.

Last modified: Tuesday, 29-Mar-2016 21:07:50 UTC


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