Abstract
A “shooting method” for locating the source of infrasonic sound waves in the atmosphere is presented. This geometric acoustics meth od is based upon analysis of microphone (or microbaro graph) array measurements to provide an initial estimate of the source location and ray direction. A ray is then propagated through the atmosphere from the estimated source position and its point and angle of return to the Earth’s surface are determined. Based upon comparison with the known measurements, the initial source position and angle estimates are refined and the integration iterated until convergence is obtained. The method appears to be very rapid to implement and limited in accuracy only by the timeliness of the input sound speed and velocity profiles in the atmosphere.
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