MB3a Infrasound Sensor Evaluation.

Abstract

Sandia National Laboratories has tested and evaluated a new infrasound sensor, the MB3a, manufactured by Seismo Wave. These infrasound sensors measure pressure output by a methodology developed by researchers at the French Alternative Energies and Atomic Energy Commission (CEA) and the technology was recently licensed to Seismo Wave for production and sales. The purpose of the infrasound sensor evaluation was to determine a measured sensitivity, transfer function, power, self-noise, dynamic range, seismic sensitivity, and selfcalibration ability. The MB3a infrasound sensors are being evaluated for potential use in the International Monitoring System (IMS) of the Comprehensive Nuclear Test-Ban-Treaty Organization (CTBTO).

Recording and Analyzing Infrasounds to Monitor Human Activities in Buildings

“…The sensor is equipped with a GPS antenna allowing us to precisely date our measurements. This sensor has an overall self-noise level at least 10 dB below Bowman's Low Noise Model [11,12], that permits to effectively distinguish the signals of interest from the infrasound background noise. The sensor can deliver the output signal in pressure with a sensitivity of 20 mV/Pa or in pressure derivative with a sensitivity of 2 mV/Pa.s -1 .…”

Characterisation of the Coherent Infrasound Sources Recorded by the Infrasound International Monitoring System Station I48TN in Tunisia (Mines & Quarries)

“…Each site is equipped with a Microbarometer MB2005 (Figure 1(c)) from 2006 to 2017 and MB3a from 2017 up to now. Both sensors were developed by the CEA, France [4], and evaluated by SANDIA laboratory [5].…”

Simulation of Infrasound Pistonphone

“…Актуальность исследования обусловлена появлением за последние 10 лет нового поколения инфразвуковых микрофонов, применяемых на станциях мониторинга за соблюдением Договора о всеобъемлющем запрещении ядерных испытаний (см., например, [1][2][3]). В России аналогом являются дифференциальные конденсаторные микробарометры К-304-АМ1И и ISGM-03M (вариант К-304-АМ1) с диапазоном частот вплоть до 0,001 -63 Гц (рабочий диапазон частот от 0,02 до 4,0 Гц) и максимальной амплитудой входного сигнала не менее 100 Па, разработанные и производимые НТЦ «Геофизические измерения».…”