Title :
Transportable distance measurement system for long range applications
Author :
Azouigui, S. ; Badr, T. ; Wallerand, J.P. ; Himbert, M. ; Salgado, J. ; Juncar, P.
Author_Institution :
Lab. Commun de Metrol. LNE-CNAM, St. Denis, France
Abstract :
This paper describes a transportable distance measurement system based on synthetic wavelength interferometry using two frequency-doubled Nd:YAG lasers. A non-polarizing system has been setup to eliminate polarization cross-talk issue. A partly software-implemented superheterodyne detection was performed to measure the synthetic phase. A fringe interpolation of 2π/5600 is demonstrated and an accuracy of ~4 μm is achieved over 3 m.
Keywords :
heterodyne detection; laser ranging; solid lasers; frequency-doubled Nd:YAG lasers; long range applications; non-polarizing system; polarization crosstalk; superheterodyne detection; synthetic wavelength interferometry; transportable distance measurement; Application software; Distance measurement; Frequency; Interferometry; Interpolation; Performance evaluation; Phase detection; Phase measurement; Polarization; Wavelength measurement;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2010 Conference on
Conference_Location :
Daejeon
Print_ISBN :
978-1-4244-6795-2
DOI :
10.1109/CPEM.2010.5544329
