Distributed data acquisition system

Details Distributed data acquisition system Distributed data acquisition system

G - Physics

01

V

349/11

G01V 1/22 (2006.01) G01V 1/16 (2006.01)

Patent

CA 1038956

DISTRIBUTED SEISMIC DATA ACQUISITION SYSTEM ABSTRACT OF THE DISCLOSURE In seismic exploration seismic waves are generated at a shot point. The amplitudes of successive samples of seismic waves appearing at a plurality of detector stations variously spaced from said shot point in the wake of generation thereof are con- verted to digital codes. The codes from all the detectors are transmitted in sequence and on a real time basis by spread spectrum radio pulses to a master station. A plurality of data acquisition units each including a radio transponder and a seismic detector are located at each of a plurality of spaced seismic detector stations in a seismic pros- pect. A master radio station means is located in or adjacent to the prospect. Means in the acquisition units and in the master station means interrogates and sequentially polls the transponder units in real time to secure and store digital samples at the master station of analog signals from the detectors at a fixed sample interval the duration of which is selected in relation to the frequencies of the signals whereby samples portray the time amplitude variations of the signals.

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