SYSTEME SISMIQUE DE RECEPTION D'ECHOS D'ONDES SONORES A CANAUX SISMIQUES SEPARES EN FILS

摘要

The present invention relates to geophysical identification methods for latent masses. The seismographic system contains in each seismographic channel (I) two adaptor elements (17), one terminal of which is connected to equivalent resistance elements (4, 18) for direct transmission of a main pair and an additional pair of a phase-reversal operational amplifier (3). The other terminal of each adaptor element (17) is connected to a terminal of a corresponding seismograph (2). The common point (19) of the equivalent resistance elements (18) is connected to a common bus (8). The system also contains two additional equivalent resistance elements (23) for feedback, one set of terminals of which is connected to the resistance elements (5) of the main pair and to the terminals of a RC circuit (21, 22) for the purpose of interference-free amplification of seismographic signals. The other set of terminals of the equivalent resistance elements (23) is connected to the inputs of a coding transducer (12). The invention is to be used preferably in prospecting for useful natural resources in sea-bed deposits using seismic methods or seismic acoustics, as well as in remote measurement using separation of conductor and seismographic channels. <IMAGE>