Advanced signal processing methods for pulsed laser vibrometry
نویسندگان
چکیده
منابع مشابه
Advanced signal processing methods for pulsed laser vibrometry.
Although pulsed coherent laser radar vibrometry has been introduced as an improvement over its continuous wave (CW) counterpart, it remains very sensitive to decorrelation noises, such as speckle, and other disturbances of its measurement. Taking advantage of more polyvalent polypulse waveforms, we address the issue with advanced signal processing. We have conducted what we believe is the first...
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We present our work to jointly optimize modulation waveforms and signal processing for long range vibration sensing using a heterodyne coherent laser radar in pulsed mode. The performance of various existing Instantaneous Frequency (IF) estimators is compared through simulation, taking into account Continuous Wave (CW) and pulse-pair waveforms, and for the first time poly-pulse waveforms. A new...
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Vibration sensing by laser radar with a pulsed emission is a promising technique for long range target recognition and identification. However, compared to its continuous-wave counterpart, it is impaired by its greater sensitivity to speckle noise and its lack of robustness to multiple independent vibrations of the target surface. Using poly-pulse waveforms for greater velocity resolution, we d...
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1 Department of Signals and Communications, University of Las Palmas de Gran Canaria, 35017 Las Palmas de Gran Canaria, Spain 2 Canary Islands Agency for Reseach, Innovation and Information Society, 35003 Las Palmas de Gran Canaria, Spain 3 Image Processing Laboratory, ETSI Telecomunicación, University of Valladolid, 47011 Valladolid, Spain 4 Laboratory for Mathematics in Imaging, Brigham and W...
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ژورنال
عنوان ژورنال: Applied Optics
سال: 2010
ISSN: 0003-6935,1539-4522
DOI: 10.1364/ao.49.003967