CEOS EO HANDBOOK – INSTRUMENT SUMMARY - Ka-band Radar Interferometer (KaRIn) -
Full Name Ka-band Radar Interferometer (KaRIn) Status Operational
Instrument Agencies NASA, CNES Maturity Low Heritage
Instrument Type Radar altimeters Geometry Nadir-viewing
Instrument Technology Radar altimeter Sampling Other
Data Access Open Access Data Format
Measurements and Applications Swath mapping radar altimeter that provides measurements for surface water.
Resolution Summary Vertical resolution is 2 cm
Swath Summary 50 km
Accuracy Summary 8.2 cm height accuracy required
Waveband Summary 35.75 GHz Center Freq / 200 MHz Bandwidth
MW (~0.1 cm - ~100 cm)
Ka-Band (26.5 to 40 GHz)
Instrument Measurements
Measurements Overview
Inland WatersLake level
Lake Area
Landscape topographyLand surface topography
Ocean topography/currentsSea level
Ocean dynamic topography
Thematic Links Global Climate Observing System Essential Climate Variables (GCOS ECVs)
ECVDescriptionProduct(s)ECV Inventory 3.0 Record(s)
Lakes click here click here search ECV Inventory records
Sea Level click here click here search ECV Inventory records
Instrument Missions
SWOT - Surface Water Ocean Topography (2022 - 2025)