Abstract
A low-frequency geoacoustic inversion method has been developed for an isovelocity waveguide using light-aircraft as a source of sound. The high Doppler shift of the acoustic field facilitates the inversion, allowing directional information to be gathered by a single, omnidirectional receiver. The inversion method has been applied to simulations and to field experiments conducted in shallow water (14.4 m depth) off the coast of La Jolla. The inversion results will be discussed along with an error analysis using the Cramer-Rao Lower Bounds. [Work supported by ONR and the ARCS Foundation.]
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