A review of wind-noise reduction methodologies

Abstract

The bane of infrasound signal detection and characterization is the noise generated by wind. In this chapter, we review the physics of wind, current theories on how wind can generate noise, and both mature and developing techniques for reducing wind noise. This subject is not completely documented in peer-reviewed journals, and we have extended our review to include nonpeer-reviewed results that appear to be robust. Specifically, we review Daniels' filters, pipe rosettes, microporous hoses, optical fiber line sensors, distributed sensors, rigid porous media filters, and wind barriers. We discuss the advantages, disadvantages, and potential of each technology. We conclude with a summary of the state of affairs in noise-reduction research and the potential impact of these technologies on future global infrasound monitoring and research efforts. © 2009 Springer Science+Business Media B.V.