Wind noise performance analysis of a prototype compact infrasound array

Abstract

Previously, presentations have been given at ASA meetings that demonstrated the potential for compact arrays of infrasound sensors achieving high gain against wind noise under appropriate environmental conditions without the use of large windscreens. These presentations focused on using specific models for the spatiotemporal correlation function of the wind noise as part of the processing methodology, and they did not directly address the features of the compact array design that influence performance. This presentation will study the effects of several compact array features on performance using a recently published cross-spectral density model for wall-bounded turbulent pressure fluctuations. Additionally, data from several experiments will be presented including data from a prototype compact infrasound array.