Title :
Laser diodes based absolute distance meter
Author :
Guillory, J. ; Wallerand, Jean-Pierre ; Obaton, Anne-Francoise ; Alexandre, Celina
Author_Institution :
Lab. Commun de Metrol. LNE, Cnam (LCM), Paris, France
Abstract :
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.
Keywords :
aberrations; intensity modulation; laser ranging; optical dispersion; phase measurement; radiowave propagation; refractive index; semiconductor lasers; telemetry; absolute distance meter; air index compensated distance meter; air temperature; chromatic dispersion; distance measurement; intensity modulated laser beam; laser diodes based telemeter; phase measurement; radio wave propagation; refractive index; Measurement by laser beam; Optical modulation; Optical reflection; Optical variables measurement; Phase measurement; Temperature measurement; Wavelength measurement; absolute distance meter; metrology; optical system; phase measurement; telemetry;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4799-5205-2
DOI :
10.1109/CPEM.2014.6898473
