DocumentCode
1246817
Title
Adaptive multifrequency modulation method for an advanced laser range finder
Author
Kawakami, Tomoteru ; Endo, Michiyuki ; Iwasaki, Takashi
Author_Institution
Sect. of Light & Radio Waves, Electrotech. Lab., Ibaraki, Japan
Volume
43
Issue
6
fYear
1994
fDate
12/1/1994 12:00:00 AM
Firstpage
857
Lastpage
860
Abstract
The intensity of a laser beam is modulated with radio frequencies (RF), in a laser range finder. The modulated laser beam is directed to a target, and the reflected light is detected. The phase of the RP signal from the detector is measured. A semitransparent obstacle between the laser and the target degrades the accuracy of the range measurement. In this paper, an adaptive multifrequency modulation method is proposed and experimentally verified to overcome this problem
Keywords
electro-optical modulation; laser ranging; RP signal; adaptive multifrequency modulation; automatic network analyser; laser range finder; modulated laser beam; photodetector; radio frequencies; reflected light; semitransparent obstacle; Degradation; Detectors; Frequency modulation; Intensity modulation; Laser beams; Optical modulation; Phase detection; Phase measurement; Radio frequency; Signal detection;
fLanguage
English
Journal_Title
Instrumentation and Measurement, IEEE Transactions on
Publisher
ieee
ISSN
0018-9456
Type
jour
DOI
10.1109/19.368085
Filename
368085
Link To Document