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A feasibility study for the detection of weak electromagnetic signal/bursts with hard-limited arrays
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November 1981
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Series: Mining Publications
[PDF-1.58 MB]
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Description:"The objective of this report was to investigate the use of a noncoherent detector based on polarity-coincidence statistic. Two channel, polarity-coincidence and polarity-difference, statistics were analyzed. The signal, common to both channels, consists of sinusoidal bursts where the exact frequency of the signal is nearly known, but other parameters such as amplitude, phase, and pulse starting time are unknown. The noise inputs are dependent, narrow band, Markov processes. It is shown that the performance depends not only on the signal uncertainties, but on the precise shape of the cross-correlation functions between the noise inputs. By using two polarity-difference statistics in addition to the polarity-coincidence statistic, it is shown that the decrease in performance, as well as the cost of hard limiting due to correlated inputs, can be made small." - NIOSHTIC-2
NIOSHTIC no. 10003948
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Pages in Document:136 pages
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NIOSHTIC Number:10003948
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Resource Number:OFR-102-84; Contract-J0318033
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