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Surveys in Geophysics

, Volume 22, Issue 5–6, pp 449–464 | Cite as

Centimeter Accuracy for the French Transportable Laser Ranging Station (FTLRS) through Sub-System Controls

  • J. Nicolas
  • F. Pierron
  • E. Samain
  • F. Barlier
Article

Abstract

The French Transportable Laser Ranging Station (FTLRS)is a highly mobile satellite laserranging (SLR) system dedicated to the trackingof geodetic satellites equipped withretroreflectors. This station weighs only 300kg witha 13-cm diameter telescope and is housedin eight containers.

The reliability of such a station and its accuracy of 2 cmin real field experiment conditionswere demonstrated during a first field campaign carried outfrom October 1996 to February1997 near Ajaccio on Corsica Island, France. The results ofthis probatory experiment suggestedthat several technical improvements and some modificationswere necessary for JASON-1validation and calibration phase and for new applicationssuch as the Time Transfer by LaserLink (T2L2) experiment. A first change concerns theuse of a new laser wavelength (green instead ofinfrared) and of a new avalanche photodiode with atime walk compensation system. Anotherchange is the installation of a coaxial cabletransmitting directly the signal coming from thereturn detector. Finally, a new calibration systemwas developed with several other changes.A short description of the system is first given.Then, the major changes and the main resultsof ground accuracy tests are summarized and presented.

accuracy collocation experiment FTLRS geodetic ultra mobile instrument radar altimeter calibration Satellite Laser Ranging time transfer 

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Copyright information

© Kluwer Academic Publishers 2001

Authors and Affiliations

  • J. Nicolas
    • 1
  • F. Pierron
    • 2
  • E. Samain
    • 2
  • F. Barlier
    • 2
  1. 1.Observatoire de la Côte d'AzurGrasseFrance
  2. 2.Observatoire de la Côte d'AzurGrasseFrance

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