Seismic array

Details Seismic array Seismic array

1976-02-09

1977-05-17

Birmiel, Howard A.

Communications: electrical

Selective

Having electron beam device

340 155GC, 340 155TS, 174 70R, G01V 120, G01V 122

Patent

active

040244920

ABSTRACT:
An improved seismic array is provided which has the capability to supply data to adjacent recording stations simultaneously. The seismic array has a plurality of seismic detector connection points, and a seismic detector is located at each seismic detector connection point. Dual weighting of the output of each seismic detector in thearray is achieved by connecting dual resistors to the output of each seismic detector. Two pairs of wires are also provided in the array, and one pair of wires interconnects one weighted output of each seismic detector to the first end of the array. The second pair of wires interconnects the second weighted output to the second end of the array. An amplifier is provided for use at either or both ends of the array, and a feedback network, including a resistor, is associated with the amplifier. The ratio of the value of the resistance in the feedback network to the weighting resistor at the seismic detector determines the magnitude of the signal appearing at the output of the amplifier from the response of that seismic detector. A Chebychev weighted array is achieved by a proper selection of resistor values.

REFERENCES:
patent: 2698927 (1955-01-01), Parr, Jr.
patent: 2747172 (1956-05-01), Bayhi
patent: 3096846 (1963-07-01), Savit et al.
patent: 3335401 (1967-08-01), Kerns
patent: 3863200 (1975-01-01), Miller
patent: 3863201 (1975-01-01), Briggs et al.
patent: 3887897 (1975-06-01), Neitzel et al.
"Chebyshev Optimized Geophone Arrays", Holzman, Geophysics, Apr. 63, pp. 145-155.

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