Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1972-01-18
1987-01-06
Blum, Theodore M.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307520, 328165, H04B 1500
Patent
active
046349880
ABSTRACT:
Unstable narrowband signals in a background of noise are detected. Aside m the condition that the center frequency changes slowly, nothing is known about the signal dynamics or the signal and noise power levels. The incoming signal is translated into a waveform that emphasizes the correlated components regardless of their instantaneous carrier frequencies. This invariance suppresses consideration of the wandering aspect of the signal and permits a test for the presence of any narrowband energy.
REFERENCES:
patent: 3076145 (1963-01-01), Copeland et al.
patent: 3374435 (1968-03-01), Engel
patent: 3492591 (1970-01-01), Shapiro
patent: 3619502 (1971-11-01), Croisier et al.
patent: 3651433 (1972-03-01), Langley
Blum Theodore M.
Hellner Mark
Lall Prithvi C.
McGill Arthur A.
McGowan Michael J.
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