Laser diodes based absolute distance meter

Christophe Alexandre (1) , Joffray Guillory , Jean-Pierre Wallerand , Anne Françoise Obaton

1 CEDRIC - Centre d'études et de recherche en informatique et communications

We present our first results in the realization of a laser diodes based telemeter. We aim at developing an air index compensated distance meter taking advantage of the dependence of the chromatic dispersion of the refractive index with air temperature. This will be realized by two simultaneous distance measurements at two different wavelengths: each measurement is based on the measurement of the phase accumulated by a radio wave propagated in air by an intensity modulated laser beam.

Domaines: Informatique [cs]; Traitement du signal et de l'image [eess.SP]

Christophe Alexandre, Joffray Guillory, Jean-Pierre Wallerand, Anne Françoise Obaton. Laser diodes based absolute distance meter. Conference on Precision Electromagnetic Measurements (CPEM 2014), Aug 2014, Rio de Janeiro, Brazil. pp.490 - 491. ⟨hal-01126488⟩