Recursive filter implemented as a matched clutter filter

Details Recursive filter implemented as a matched clutter filter Recursive filter implemented as a matched clutter filter

1974-11-11

1977-02-01

Dildine, Jr., R. Stephen

Registers

Transfer mechanism

Traveling pawl

G06F 1534

Patent

active

040063518

ABSTRACT:
In a recursive (zeros and poles) filter having input and output signals y and y.sub.o and having impulse response h.sub.r apparatus and method for obtaining the convolution y.sub.o = y * h.sub.r using either the convolution integral or using the discrete Fourier transform (DFT). When using the convolution integral the apparatus first computes the impulse response h.sub.r then obtains the response y.sub.o in a convolver while when using the DFT the apparatus first computes the transfer function H.sub.r then obtains the frequency spectrum Sy.sub.o of response y.sub.o. By implementing the recursive filter as a matched clutter filter, the error normally associated with this type filter is minimized.

REFERENCES:
patent: 3808412 (1974-04-01), Smith
McCracken, D. D., et al., Numerical Methods and Fortran Programming, N.Y., John Wiley and Sons, Inc., 1964, pp. 2-3.

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