Matched filter data smoothing system

Details Matched filter data smoothing system Matched filter data smoothing system

1989-09-18

1993-07-13

Envall, Jr., Roy N.

Boots, shoes, and leggings

364553, 36472401, 36472412, G01V 500

Patent

active

052279723

ABSTRACT:
An efficient spatial smoothing algorithm for filtering data while preserving spatial detail is obtained using the system (impulse response) function of the sensor. In contrast to the normal procedure for determining the filter coefficients for an arbitrary system function, this technique avoids the use of Fourier transforms. The spatial filtering coefficients are obtained analytically for the frequently applicable Gaussian system function. The efficiency of this procedure is illustrated by filtering discrete data. For realtime smoothing of nuclear log data, a filter length of five times the vertical resolution is required.

REFERENCES:
patent: 4156914 (1979-05-01), Westell
patent: 4467425 (1984-08-01), Schaefer et al.
patent: 4777428 (1988-10-01), Lundback
Computers in Physics, Nov./Dec. 1987, Hayden, "Data Smoothing Routine", pp. 74-75.

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