Objectives and Applications
A high-precision radar altimetry mission supporting physical oceanography, geodesy, climate monitoring, and marine meteorology through accurate sea surface height measurements. It served as the reference altimeter for global constellation cross-calibration and long-term sea level monitoring before Sentinel-6.
Full Name
Joint Altimetry Satellite Oceanography Network - 3
Mission Status
Operational (extended)
Mission Agencies
Launch Date
17 Jan 2016
Mission Links
EOL Date
Dec 2025
Orbit Type
Inclined, non-sun-synchronous
Orbit Period
112.4 minutes
Orbit Sense
N/A
Orbit Inclination
66.05 deg
Orbit Altitude
1343 km
Orbit Longitude
Orbit LST
Repeat Cycle
10 days
NORAD Catalog #
International Designator
AMR - Advanced Microwave Radiometer |
| DGXX-S - Doppler Orbitography and Radio-positioning Integrated by Satellite (DORIS) - New Generation XX-S |
| GPSP - Global Positioning System Payload |
| LRA - Laser Retroreflector Array |
| POSEIDON-3B Altimeter - Positioning Ocean Solid Earth Ice Dynamics Orbiting Navigator (Single frequency solid state radar altimeter) |