Using GNSS to Evaluate Threats to Mobility of Resources and People on Coastal Roads in USDOT Region 10

Description: 1) rawGNSSdata a) The raw GNSS data observed in Duck, North Carolina during 4-31 December 2020 b) Intended use: Extraction of wave heights and water levels by analyzing the reflected GNSS signals included in the raw GNSS data c) Data collection information (a) Observation interval: 1 sec (b) Constellation: GPS, GLONASS, Galileo, and BeiDou (c) Receiver type: Septentrio PolaRx5S (d) Antenna type: Septentrio VersaPhase 6000 (e) Approximate coordinates:  Latitude: 36.18°  Longitude: -75.75°  Height: 46.15m 2) FRF-ocean_waves_awac-11m_202012.nc a) Significant Wave Height (SWH) data observed by FRF 11m AWAC wave buoy in December 2020. b) Intended use: Comparison and verification with the wave heights extracted from GNSS-R based tide gauge c) Data source: https://frfdataportal.erdc.dren.mil/ 3) TideGaugeData a) The water levels observed by a tide gauge station (Station ID: 8651370) during 4-31 December 2020 b) Intended use: Comparison and verification with the water levels extracted from GNSS-R based tide gauge c) Data source: https://tidesandcurrents.noaa.gov/waterlevels.html?id=8651370 4) WaterLevelfromGNSS.xlsx a) The water levels estimated by the GNSS-R based tide gauge during 4-31 December 2020 5) CLRfromGNSS.xlsx a) The CLRs (Confidence Level of Retrievals) estimated by the GNSS-R based tide gauge during 4-31 December 2020