Efficient adaptive filter bank
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United States of America Patent
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-
Mar 24, 1987
Grant Date -
N/A
app pub date -
Jan 10, 1984
filing date -
Jan 10, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An N-point Fourier transform circuit for a moving target indicator system including a delay circuit with 2N-2 delays, N frequency filters, a processor for forming a main signal and N-1 auxiliary signals via time sample manipulation, a Gram-Schmidt adaptive canceller circuit for decorrelating the N-1 auxiliary signals from the main signal, and a first and second commutating switches. The first switch tracks a given set of N time samples through the delay circuit. The second switch switches the given set of N time samples through a different successive frequency filters of the N frequency filters every transmission. The first switch tracks in synchronism with the second switch and switches to obtain a new given set of N time samples every NT seconds.
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