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In this paper we compare the detection performance of underwater electric-field sensors against divers using three different detection algorithms (matched filter, non-coherent and quadrature detectors). The detection performance is quantified and presented as ROC-curves. The empirical results are based on measurements of signatures from divers with open circuit breathing systems. They were performed...
In the ocean there are mainly two ways of characterizing the properties of the sediment structure. One technique is to observe the properties by physically collecting core samples by in-situ instrumentation. The other is to use remote techniques to estimate the acoustic properties of the sediment and from these observations invert the sediment thickness and sound velocity by interpreting the reflected...
The Air-Sea Interaction Profiler (ASIP) is an autonomous profiling instrument for upper ocean measurements. The measurements from ASIP are well suited to enhancing research on air-sea interfacial and near surface processes. Autonomous profiling is accomplished with a thruster, which submerges ASIP to a programmed depth. Once this depth is reached the positively buoyant instrument will ascend to the...
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