Connection system and data extraction method of combined ocean bottom seismic acquisition nodes

Abstract

The invention provides a connection system and a data extraction method of combined ocean bottom seismic acquisition nodes. Through the connection system, functions of GPS clock comparison, charging, firmware upgrading, state searching and data communication for the combined ocean bottom seismic acquisition nodes are simultaneously achieved; by use of a host program, through ICMP and FTP protocols, a method for carrying out data extraction on a connection device automatically and simultaneously is achieved; after data extraction, clock difference correction of re-sampling is performed on the acquired data, so high-precision clock synchronous acquisition data is obtained; problems of long time, low efficiency and complex operation processes of related operation on devices after investment and recycling of the traditional ocean bottom seismometer are effectively overcome; a one-to-many solution is achieved; efficiency is improved; operation processes are simplified; practicability and suitability are improved; and requirements of acquisition and observation of hundreds of acquisition nodes in the ocean bottom observation system are met.

Description

technical field [0001] The invention belongs to the technical field of geophysical exploration, and relates to a connection system and data extraction method based on a combined seabed seismic acquisition node, which realizes simultaneous GPS clock alignment, charging, firmware upgrade, Status query and data communication and data extraction methods. Background technique [0002] Submarine geophysical detection equipment, especially the Ocean Bottom Seismometer (OBS) is an important means of detecting marine oil and gas resources, and as the demand for the density and information of OBS in deepwater oil and gas exploration far exceeds that of general seabed Therefore, the submarine seismic detection system based on the combined submarine seismograph has become a development trend. Because each node of it can perform acquisition operations independently, it can adapt to areas with complex topography such as drastic changes in the seabed, while conventional seismic acquisition...

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Problems solved by technology

[0005] Based on the needs of reality and production practice, the applicant invested a lot of money and long-term research, and provided a connection system and data extraction method based on combined seabed seismic acquisition nodes, which solved the problem of the above problems in seabed geophysical exploration. Hundreds of combined seabed seismic acquisition nodes need to carry out a series of work such as GPS clock alignment and status inspection for each acquisition node before and after recovery, and the method of data extraction and processing after recovery. The purpose is to improve the observation system deployment time. High work efficiency and high-precision data quality requirements, thus providing guarantee for offshore oil and gas exploration and scientific research

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