Performance Improvement of Multiple Array 3D Sonic Digitizer System via Calibration

Document type: Conference Papers
Peer reviewed: Yes
Author(s): Nedelko Grbic, Xiao-Jiao Tao, Ingvar Claesson
Title: Performance Improvement of Multiple Array 3D Sonic Digitizer System via Calibration
Conference name: RVK 99 (RadioVetenskap och kommunikation)
Year: 1999
ISBN: 91-630-8156-3
Publisher: Högskolan i Karlskrona/Ronneby
City: Karlskrona
Organization: Blekinge Institute of Technology
Department: Department of Telecommunications and Signal Processing (Institutionen för telekommunikation och signalbehandling)
Department of Telecommunications and Signal Processing S-372 25 Ronneby
+46 455 38 50 00
Authors e-mail: ngr@bth.se, xjtao@agere.com, icl@bth.se
Language: English
Abstract: Multiple array 3D sonic digitizer system is a product made for measuring the geometric structure of an arbitrary object in three dimension. This paper gives a theoretical performance evaluation of the system. The Cramer-Rao Lower Bound of the parameter estimates of a linear segment is derived. In addition, the distortion effect caused by the time-delay bias, including rescaling, rotation and bending of the original object, is clarified. A simple method using a line segment is proposed to calibrate the bias term arised in the different parts of the system. Finally a simulation gives a numerical demonstration of the previous analysis and performance improvement of the suggested method.
Subject: Signal Processing\Detection and Classification
Signal Processing\General
Keywords: Sonic array, 3D Source localization, Acoustic
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