Airborne source localization by a near underwater HLA
The underwater source localization has been paid much attention for decades. However, few researches on the airborne source localization by using underwater signals have been reported. In this paper, the location of a airborne source has been estimated from signals measured by a horizontal line array (HLA). It is based on the fact that a signal will reaches the hydrophone in different ways: via a direct refracted path, via one or more bottom and surface reflections, via the so-called lateral wave. As a result, when we using a HLA near the airborne source to do beamforming, several peak values at different bearing angles will appear. By matches the experimental beamforming output with the predict outputs for all source locations, the best possible location is the one who gives minimum difference. The experiment has conducted in the Yellow Sea in Oct. 2008. A HLA lay on the sea bottom in the depth of 30m. A high-power loudspeaker was hung on a research ship floating near the HLA and sent out LFM pulses. The estimated location of the loudspeaker is in well agreement with the GPS measurements.
Zhaohui Peng Di Meng
National Laboratory of Acoustics,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,P Naval Academy of Armament,Beijing 100161,P.R.China
国际会议
The 10th Western Pacific Acoustics Conference(第十届西太平洋声学会议WESPAC X)
北京
英文
1-7
2009-09-21（万方平台首次上网日期，不代表论文的发表时间）