Light wave distance measuring apparatus

Details Light wave distance measuring apparatus Light wave distance measuring apparatus

2007-02-13

2007-02-13

Tarcza, Thomas H. (Department: 3662)

Optics: measuring and testing

Range or remote distance finding

With photodetection

C356S005010, C356S005110, C356S005150

Reexamination Certificate

active

11071547

ABSTRACT:
A reference electrical signal oscillated by the main oscillator (11) has two kinds of frequencies (f1, f2) which are different from each other and any one of which is alternatively selected, a sampling signal is synchronized with the reference electrical signal once every n times, and a frequency (fs) of the sampling signal is an average value of the two kinds of frequencies (f1, f2) of the reference electrical signal, and the A/D conversion portion carries out at least one A/D conversion per period of the reference electrical signal and the received electrical signal based on the sampling signal.

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“Digital Laser Range Finder: Phase-Shift Estimation by Undersampling Technique” By Stephane Poujouly et al./ Nov. 29, 1999 Industrial Electronics Society/ pp. 1312-1317.

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