Magnification of the phase-shift for laser distance measurement

Author

Perchet, G. ; Lescure, M. ; Bosch, T.

Author_Institution

ENSEEIHT, Toulouse, France

Volume

1

fYear

1997

Firstpage

617

Abstract

The design of a phase-shift expander used for measuring distances in phase-shift rangefinder is presented. The system uses two coherent indirect frequency synthesisers with the photoelectric signal and the reference signal as input voltages. Theory demonstrates that a great improvement for phase-shift measurement resolution may be achieved. The main error sources are analysed: the influence of the output frequency modulation and the influence of the output frequency stability are evaluated. First experimentation results are presented

Keywords

frequency synthesizers; laser frequency stability; laser ranging; measurement errors; optical modulation; phase shifters; coherent indirect frequency synthesisers; error sources; laser distance measurement; measurement resolution; output frequency modulation; output frequency stability; phase-shift expander; phase-shift rangefinder; photoelectric signal; reference signal; Circuits; Distance measurement; Frequency conversion; Frequency measurement; Phase detection; Phase frequency detector; Phase measurement; Signal resolution; Voltage; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 1997. IMTC/97. Proceedings. Sensing, Processing, Networking., IEEE

Conference_Location

Ottawa, Ont.

ISSN

1091-5281

Print_ISBN

0-7803-3747-6

Type

conf

DOI

10.1109/IMTC.1997.604024

Filename

604024