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Proceedings Paper

Target recognition by vibration frequency analysis: a comparison of laser vibrometry and acoustic methods
Author(s): Dietmar Letalick; Tomas Carlsson; Hans Habberstad; Makus Henriksson
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Paper Abstract

Target recognition is an important issue on the military battlefield. Vibration signatures are robust and independent on target orientation. Hence, they are interesting to use for classification and identification of targets. Various sensors can be used to measure signatures induced by target vibrations, such as laser vibrometry and acoustic sensors. The output from both sensors can be presented as a frequency spectrum that represents the target vibrations. A field trial was conducted where some military targets were investigated. Simultaneous data were taken with two sensors: i) a laser vibrometry system consisting of a 1.55 μm eye-safe coherent laser radar; and ii) an acoustic data logging system with Bruel & Kjaer free field microphone and amplifier as the sensor part. The range to the targets was between 25 and 100 meters. Results from the field trial are reported and a comparison of the data from the sensors is presented.

Paper Details

Date Published: 21 August 2003
PDF: 7 pages
Proc. SPIE 5086, Laser Radar Technology and Applications VIII, (21 August 2003); doi: 10.1117/12.488508
Show Author Affiliations
Dietmar Letalick, Swedish Defence Research Agency (Sweden)
Tomas Carlsson, Swedish Defence Research Agency (Sweden)
Hans Habberstad, Swedish Defence Research Agency (Sweden)
Makus Henriksson, Swedish Defence Research Agency (Sweden)


Published in SPIE Proceedings Vol. 5086:
Laser Radar Technology and Applications VIII
Gary W. Kamerman, Editor(s)

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