The National Oceanic and Atmospheric Administration (NOAA) invites you to the next webinar in its Innovators Series: GPS Precise Point Positioning (PPP) Tool - Providing Real-time Space Weather Impacts on GPS Positioning Accuracy
Space weather can contribute to each of the three main error sources that affect GPS systems’ positioning accuracy: knowledge of GPS satellite locations, multipath effects, and atmospheric interference effects. These error sources impact GPS-based applications’ accuracy and reliability in markets with stringent position accuracy requirements.
The Precise Point Positioning (PPP) tool from Atmospheric & Space Technology Research Associates (ASTRA) combines traditional precise point positioning, which provides centimeter-level accuracy, along with a large network of globally distributed Global Navigation Satellite System (GNSS) reference stations that provide measurements in real time.
Through a NOAA-funded PPP Small Business Innovation Research (SBIR) project, ASTRA has demonstrated a framework for nowcasting and forecasting positioning and timing errors in single and dual-frequency GPS receivers using data from ground based GPS receivers across the US, Canada and Mexico. ASTRA has also demonstrated that Rate of TEC index (ROTI) maps can be used as a proxy for ionospheric scintillations.
Speakers will include Dr. Geoff Crowley, ASTRA CEO and founder, and Dr. Irfan Azeem, ASTRA chief scientist.