Measurements and Applications
Constellation of bistatic radar receivers using GPS satellite transmitters to detect ocean surface roughness and estimate near-surface wind speed from calm sea through hurricane force conditions and under all levels of precipitation.
Full Name
Delay Doppler Mapping Instrument (DDMI)
Status
Operational
Instrument Agencies
Maturity
Instrument Type
Other
Geometry
Push-broom scanning
Instrument Technology
GNSS receiver
Sampling
Other
Data Access
Open Access
Data Format
NetCDF
Resolution
20-50 km (variable in ground processing)
[Best Resolution: 20000m]
Swath
Field of view of potential GPS specular point contacts extends 740 km cross-track in both port and starboard directions.
[Max Swath: 1480 km]
Accuracy
wind speed RMS retrieval uncertainty: 2 m/s for winds less than 20 m/s and 10% for winds greater than 20 m/s
Waveband
Microwave: 1.575 GHz
CYGNSS - Cyclone Global Navigation Satellite System (2016 - 2026) |