Scientific and Technical Journal


ISSN Print 2221-3937
ISSN Online 2221-3805

The question of the influence of the acoustic sensor network (ASN) with TDOA technology on the potential accuracy of sound source coordinates estimation has been studied. The problem of choice ACC geometry resolved to build an acoustic system for heat transfer leak monitoring in the energy equipment. A special feature of this problem is the possibility to placing acoustic sensors only in available for this point of technological enclosure. The geometric dilution of precision (GDOP) is selected as a measure for the potential estimation accuracy of the sound source coordinates estimation. It is shown that the direct calculation of GDOP is computationally challenging. It is proposed to use volumes of elementary tetrahedrons formed by each four sensors of network in the network geometry synthesis.  These volumes are inversely proportional to the value of GDOP. Tetrahedron close to coplanar, have a volume close to zero, and should be excluded from the network geometry in the synthesis process. The multi-step method for ASN geometry synthesis allows to obtain the guaranteed value of GDOP controlled within a rectangular technological space. The method involves sequential sensors in the network with rejection ones which produce tetrahedrons being coplanar or nearly coplanar. It is shown that the method allows to obtain the value of GDOP no more than  4-6.

DOI 10.15276/eltecs.23.99.2016.22

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