Abstract
In August 2023, the Antares 230 successfully launched for the NG-19 resupply mission to the International Space Station. Acoustical data were collected from various locations surrounding the launch pad from 60-200 m away from the vehicle. Each measurement location was configured such that acoustic intensity could be determined for a wide range of frequencies. Intensity calculations are made using the phase and amplitude gradient estimate (PAGE) method for information past the spatial Nyquist frequency of the station configuration. For the analyses presented here, the PAGE method utilized the generic MATLAB phase unwrapping function. This paper will show intensity vectors as a function of frequency and time to estimate the approximate location of the sound source. A least-squares optimization routine is used for the intersection point of each stations’ intensity vector.
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