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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.

Status
Not Operational
Type
Passive optical instrument
Technical Characteristics
Accuracy:
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:
Waveband:
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

ERS, Envisat and TPM - OTF planned maintenance on 3 October 2019

02 October 2019

A software maintenance affecting the On-The-Fly (OTF) Third Party Missions (TPM) and ERS / Envisat (A)SAR data dissemination services has been planned according to the following schedule:

  • ERS and Envisat dissemination service: 3 October from 09:00 to 11:00 CEST
  • TPM dissemination service: 3 October from 11:00 to 14:00 CEST.