CEOS EO HANDBOOK – INSTRUMENT SUMMARY
- DDMI (CYGNSS)
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Full Name
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Delay Doppler Mapping Instrument (DDMI)
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Status
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Operational
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Instrument Agencies
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NASA , NOAA
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Maturity
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Instrument Type
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Other
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Geometry
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Push-broom scanning
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Instrument Technology
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GNSS receiver
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Sampling
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Other
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Data Access
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Open Access
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Data Format
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NetCDF
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Measurements and Applications
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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.
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Resolution Summary
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20-50 km (variable in ground processing)
[Best Resolution: 20000m]
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Swath Summary
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Field of view of potential GPS specular point contacts extends 740 km cross-track in both port and starboard directions.
[Max Swath: 1480 km]
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Accuracy Summary
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wind speed RMS retrieval uncertainty: 2 m/s for winds less than 20 m/s and 10% for winds greater than 20 m/s
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Waveband Summary
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Microwave: 1.575 GHz
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Instrument Measurements
Measurements Overview
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Instrument Missions
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