منابع مشابه
Calibration of an Optical-Acoustic Sensor∗
In this paper an application is described, where image registration to a model is used in conjunction with registration of acoustic (3-D) data to the same model to perform calibration of an optical/acoustic rig. This allows to register the video image with the depth map acquired by the acoustic device, thereby obtaining a single multisensorial image. Experimental results on both synthetic and r...
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The Intelligent Vehicle-Highway System (IVHS) program requires a large number of sensors to accurately measure traffic data. A novel passive acoustic sensing scheme based upon a triple-aperture microphone array is proposed as an inexpensive, reliable alternative to other sensors under consideration. A single sensor exhibits the potential for monitoring several lanes of traffic simultaneously. A...
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The need for acoustic instrumentation to gather signatures under prohibited weather conditions or hostile natural and man-made barriers led to the placement of microphones below the ground surface. This paper will show how the idea was conceived and its initial implementation. Testing of the device at various sites will show its performance as an acoustic signaturegathering sensor. Equations wi...
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The properties of underwater acoustic channel are quite different from those of terrestrial wireless sensor networks. There are many challenges to design an efficient media access control (MAC) protocol for underwater acoustic sensor networks (UWASNs). In order to overcome the long propagation delay and low available bandwidth of UWASNs, an enhanced dynamic token protocol (EDTP), is proposed in...
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Underwater acoustic sensor network (UASN) is a promising technique, which will facilitate a wide range of aquatic applications. However, because of adverse underwater environments, UASN faces grand challenges and problems such as limited bandwidth, node movement, long propagation delay, three-dimension deployment, energy-constraint, expensive manufacture and deployment costs. In order to addres...
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ژورنال
عنوان ژورنال: Review of Scientific Instruments
سال: 2003
ISSN: 0034-6748,1089-7623
DOI: 10.1063/1.1614850