Daniel B. Kilfoyle

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A spectroscopic data acquisition system was developed for plasma discharges. The system can rapidly determine plasma properties such as temperature and density with temporal resolution as high as 100 nanoseconds and spatial resolution as low as 0.5 millimeters. System response and linearity was documented and overall performance was investigated using a(More)
There have been two fundamental advances in underwater acoustic communication in the last two decades. The first occurred in the early 1980’s with the introduction of digital signaling techniques [1]. That facilitated both error correction and reverberation mitigation. The second advance has been the successful application of coherent signaling techniques(More)
There have been two fundamental advances in underwater acoustic communication in the last two decades. The first occurred in the early 1980’s with the introduction of digital signaling techniques [1]. That facilitated both error correction and reverberation mitigation. The second advance has been the successful application of coherent signaling techniques(More)
A modulation technique for increasing the reliable data rate achievable by an underwater acoustic communication system is presented and demonstrated. The technique, termed spatial modulation, seeks to control the spatial distribution of signal energy such that multiple parallel communication channels are supported by the single, physical ocean channel.(More)
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