Abstract
A two part project has investigated whether the pressure fluctuations (infrasonic wind noise) at the ground, as measured in an open field, can be predicted from the vertical wind velocity measured above the ground. The dominant region contributing to the pressure on the ground is calculated theoretically and displayed with contour plots. Experimentally, time dependent correlations between the measured pressure and wind velocities were done. The correlation coefficients were very low, typically between 0.08–0.15, for broadband frequencies up to 5 Hz. Cross spectrum analysis and application of octave band pass filters showed the dominant frequencies for correlations to be around 0.07–0.1 Hz, with correlation coefficients typically between 0.3–0.5. [Project funded by the US Army Space and Missile Defense Command.]
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
