A Large 2-dimensional Hydrophone Array for Long-range, Low Frequency Studies
A 2-dimensional array of hydrophones was deployed for a year off the coast of California from July 1998 until August 1999 to receive signals from a 75Hz acoustic source installed 811m deep off the north coast of Kauai, Hawaii, a distance of 3,900km. It consisted of four 700-m-long, 20-element vertical arrays and one 1400-m-long, 40-element vertical array arranged in a 3600-m line transverse to the acoustic path from the Kauai source. The 2-dimensional planar array allowed measurement of the full signal wave front as a function of depth, transverse distance and time. The purpose of the array was to study the temporal, vertical, and horizontal coherence of long- range, low-frequency resolved rays and modes and to compare the measurements to predictions. It was also designed to measure directional ambient sound spectra. The ultimate goal is to determine fundamental ocean environmental limitations on signal processing. In this paper we describe the array and its engineering, and provide examples of the data obtined during the experiment.
Robert C. Spindel Peter F. Worcester Jeffrey Simmen NPAL Group
Applied Physics Laboratory University of Washington 1013 NE 40<th> Street Seattle, WA 98105, USA
国际会议
北京
英文
321-330
2007-10-01（万方平台首次上网日期，不代表论文的发表时间）