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Instrument image

The Laser Retro-Reflector (LRR) is mounted on the Earth-facing panel of Envisat close to the RA-2 antenna to support satellite ranging for precise orbit determination and RA-2 range measurement calibration. Laser tracking provides the distance between the spacecraft and the station and is assimilated in precise orbit determination. It will be used extensively during the commissioning phase and regularly during the mission to verify the stability of the positioning system.

Not Operational
Passive optical instrument
Technical Characteristics
Efficiency: less or equal than 0.15 end-of-life, Reflection Coefficient: less or equal than 0.80 end-of-life, Field of view: elev. half-cone angle 60 degrees; azimuth 360degrees, Diameter: more or equal than 20 cm
Spatial Resolution:
Swath Width:
350-800 nm optimised for 532 nm
Earth Topics
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Related Instruments
Available Resources Type Access
ESA Bulletin, Nr. 106 - ENVISAT Special Issue ESA Bulletin link
Minimize Latest Operational News

OADS-OTF planned maintenance – 09 and 10 Jan 2018

05 January 2018

Due to a scheduled maintenance starting on 09 January 2018, access to the On-The-Fly online dissemination systems will be unavailable and the access to the ERS and Envisat (A)SAR collections via EOLI-SA will also be affected during the maintenance on 10 January 2018.