Measurements and Applications
Nadir viewing sounding radar for provision of real-time high-precision sea surface topography, ocean circulation and wave height data.
Full Name
Poseidon-5 SAR Radar Altimeter
Status
Proposed
Instrument Agencies
Maturity
Instrument Type
Radar altimeters 
Geometry
Nadir-viewing
Instrument Technology
Radar altimeter
Sampling
Sounding
Swath
On Sentninel-3 A&B tracks
[Max Swath: 30 km]
Accuracy
Sea level: 3.2 cm, Significant wave height: 0.15 m, Horizontal sea surface wind speed: 1.5 m/s
Waveband
Microwave: Ku-band (13.575 GHz), C-band (5.3 GHz)
| Ku-Band (12.5 to 18 GHz) |
| C-Band (8 - 4 GHz) |
S3NGT-A - Sentinel-3 Next Generation Topography A (2034 - 2044) |
| S3NGT-B - Sentinel-3 Next Generation Topography B (2036 - 2046) |