An initial phase error elimination in a laser scanner with a multiple phase demodulation method

To have higher resolution of distance in the laser scanner using the phase demodulation method, to demodulate using an intermediate frequency is advantageous. This method is called the multiple phase demodulation method. In the multiple phase demodulation method several frequencies are used for sign...

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Bibliographic Details
Published in2009 International Symposium on Optomechatronic Technologies pp. 256 - 259
Main Authors Heesun Yoon, Seonggu Kang, Hajun Song, Kyihwan Park, Hyunho Lee, Myoungsoo Han
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2009
Subjects
Amplitude modulation
Clocks
Demodulation
Frequency modulation
Frequency synchronization
Laser theory
Oscillators
Pulse measurements
Signal processing
Signal resolution
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Summary:To have higher resolution of distance in the laser scanner using the phase demodulation method, to demodulate using an intermediate frequency is advantageous. This method is called the multiple phase demodulation method. In the multiple phase demodulation method several frequencies are used for signal processing. These signals are made from the oscillator and the programmable clock source. Even though the clock source is well synchronized with the oscillator, the initial phase error problem can be occurred since the operating points of both signal sources are not exactly simultaneous. In this work, the experimental results are presented to show how the initial phase error problem is solved.
ISBN:9781424442096
1424442095
DOI:10.1109/ISOT.2009.5326067