The cooperative array performance experiment: A joint China‐US vector field experiment.

Abstract

The cooperative array performance experiment (CAPEx) was performed in Lake Washington near Seattle in September 2009. Acoustic transmissions in the 1.5–4 kHz band were recorded simultaneously on two vertical arrays: one a conventional 32‐element pressure‐sensor array and the other an 8‐element array that measured both pressure and the three orthogonal components of acoustic particle velocity at each element. The present talk is an overview of both the data collected and the hardware used during CAPEx. Data were collected on the stationary arrays for both stationary‐ and towed‐source scenarios in water 60 m deep. The source‐receiver range varied between 10 m and 4 km. The data collected at short range demonstrate the relationship between the pressure and particle velocity fields. At more distant ranges, the particle velocity data are used to estimate the bearing to the source. Experimental results are compared to predictions generated using numerical models. [Work supported by ONR.]