Origin and mitigation of wind noise on balloon-borne infrasound microbarometers

Krishnamoorthy, Siddharth; Bowman, Daniel C.; Komjathy, Attila; Pauken, Michael T.; Cutts, James A.

doi:10.1121/10.0002356

Title: Origin and mitigation of wind noise on balloon-borne infrasound microbarometers

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Abstract

High-altitude monitoring of low-frequency acoustic waves (infrasound) on Earth has regained prominence in recent years, primarily driven by improvements in light-weight sensor technology and advances in scientific ballooning techniques. Balloon-borne infrasound monitoring is also being proposed as a remote sensing technique for planetary exploration. Contrary to ground-based infrasound monitoring, the infrasound noise background in the stratosphere as measured by a balloon remains uncharacterized and the efficacy of wind noise mitigation filters has not been investigated. In this study, an analysis of pressure data collected using infrasound microbarometers during the flight of a long-duration zero pressure balloon is presented. Here, a dramatic reduction of background noise in the stratosphere is demonstrated and it is shown that wind noise mitigation filters are not effective at reducing wind noise under these conditions. Results from this study demonstrate stratospheric balloons as a low-noise platform for infrasound monitoring and motivate the development of improved noise mitigation tools.

Authors:

^[1]; Bowman, Daniel C. ^[2]; Komjathy, Attila ^[1]; Pauken, Michael T. ^[1]; Cutts, James A. ^[1]

California Institute of Technology (CalTech), Pasadena, CA (United States). Jet Propulsion Lab. (JPL)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Publication Date:: Mon Oct 26 00:00:00 EDT 2020

Research Org.:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1725849

Alternate Identifier(s):: OSTI ID: 1686240

Report Number(s):: SAND-2020-12754J
Journal ID: ISSN 0001-4966; 692365

Grant/Contract Number:: AC04-94AL85000; NA0003525

Resource Type:: Accepted Manuscript

Journal Name:: Journal of the Acoustical Society of America

Additional Journal Information:: Journal Volume: 148; Journal Issue: 4; Journal ID: ISSN 0001-4966

Publisher:: Acoustical Society of America

Country of Publication:: United States

Language:: English

Subject:: 47 OTHER INSTRUMENTATION

Citation Formats


                    Krishnamoorthy, Siddharth, Bowman, Daniel C., Komjathy, Attila, Pauken, Michael T., and Cutts, James A. Origin and mitigation of wind noise on balloon-borne infrasound microbarometers.  United States: N. p., 2020. 
Web.  doi:10.1121/10.0002356.

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                    Krishnamoorthy, Siddharth, Bowman, Daniel C., Komjathy, Attila, Pauken, Michael T., & Cutts, James A. Origin and mitigation of wind noise on balloon-borne infrasound microbarometers.  United States.  https://doi.org/10.1121/10.0002356

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                    Krishnamoorthy, Siddharth, Bowman, Daniel C., Komjathy, Attila, Pauken, Michael T., and Cutts, James A. Mon .  
"Origin and mitigation of wind noise on balloon-borne infrasound microbarometers".  United States.  https://doi.org/10.1121/10.0002356.  https://www.osti.gov/servlets/purl/1725849.

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@article{osti_1725849,

  title        = {Origin and mitigation of wind noise on balloon-borne infrasound microbarometers},

  author       = {Krishnamoorthy, Siddharth and Bowman, Daniel C. and Komjathy, Attila and Pauken, Michael T. and Cutts, James A.},

  abstractNote = {High-altitude monitoring of low-frequency acoustic waves (infrasound) on Earth has regained prominence in recent years, primarily driven by improvements in light-weight sensor technology and advances in scientific ballooning techniques. Balloon-borne infrasound monitoring is also being proposed as a remote sensing technique for planetary exploration. Contrary to ground-based infrasound monitoring, the infrasound noise background in the stratosphere as measured by a balloon remains uncharacterized and the efficacy of wind noise mitigation filters has not been investigated. In this study, an analysis of pressure data collected using infrasound microbarometers during the flight of a long-duration zero pressure balloon is presented. Here, a dramatic reduction of background noise in the stratosphere is demonstrated and it is shown that wind noise mitigation filters are not effective at reducing wind noise under these conditions. Results from this study demonstrate stratospheric balloons as a low-noise platform for infrasound monitoring and motivate the development of improved noise mitigation tools.},

  doi          = {10.1121/10.0002356},

  journal      = {Journal of the Acoustical Society of America},

  number       = 4,

  volume       = 148,

  place        = {United States},

  year         = {Mon Oct 26 00:00:00 EDT 2020},

  month        = {Mon Oct 26 00:00:00 EDT 2020}

}

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