Three dimensional passive acoustic spatial identification of nucleations in superheated droplet detectors

Authors:
M. Felizardo;R. C. Martins;T. A. Girard
Affiliations:
Centro de Física Nuclear, Universidade de Lisboa, 1649-003 Lisbon, Portugal and Instituto Tecnológico e Nuclear, Estrada Nacional 10, 2686-953 Sacavém, Portugal and Instituto de Tel ...;Instituto de Telecomunicaçíes, IST, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal;Centro de Física Nuclear, Universidade de Lisboa, 1649-003 Lisbon, Portugal
Venue:
Computer Standards & Interfaces
Year:
2010

Citing 2
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The world according to wavelets: the story of a mathematical technique in the making

The world according to wavelets: the story of a mathematical technique in the making
Maximum-likelihood source localization and unknown sensor locationestimation for wideband signals in the near-field

IEEE Transactions on Signal Processing

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Abstract

A new method for spatial localization of bubble nucleations in superheated droplet detectors is presented which has two steps: validation and localization. Validation is accomplished through signal processing techniques serving the purpose of filtering out electromagnetic noise and gaseous micro-leaks. The 3D spatial localization uses a passive acoustic sound source localization technique using a microphone array (5 elements) and a simple generalised cross-correlation (GCC) time delay of arrival (TDOA) algorithm. The approach for the nucleation validation is new and regarding the localization, as of this writing, we are the first to endeavour its feasibility assessment. Experimental results are shown.