Method and system for transmission of seismic data to a remote central recording station

摘要

Acquisition units (A) are used to collect seismic data from a number of sensor receivers (R) which produce a seismic trace during geological exploration. The units (A) have acquisition chains (CA) which consist of low pass filters (F11), preamplifiers (PA), high pass filters (F21) and analogue to digital convertors (AD1). The output from the acquisition chains and access to a remote station radio link is controlled by a microprocessor (2) and associated memories (M1,Mp). A very high capacity memory (9) stores seismic data which may be preprocessed and compressed to produce an orderly float. Data from this float is transmitted to a remote station through a radio link (3,4) with a delay from their memorisation which depends on the traffic in the transmission and the type of transmission used.