Marine seismic exploration towrope simulation system and method easy to expand and capable of being flexibly configured

Abstract

The invention relates to a marine seismic exploration towrope simulation system and method easy to expand and capable of being flexibly configured. The marine seismic exploration towrope simulation system comprises an indoor system, a computer and a simulation system circuit board. The simulation system circuit board comprises an interface module, a single-cable simulation module and a function inspection module; the single-cable simulation module comprises a data generation module, an adjustable system structure simulation module, a system structure parameter table, a command analysis module, a post-processing module for data frames at all levels and an error simulation module; the problems that a towing cable simulation system is fixed in structure, specific node data cannot be controlled and processed, and error simulation is incomplete are solved, the topological structure of the simulation system and the node scale of each layer are flexibly adjusted, the requirement for continuous upgrading of a towing cable DAQ system is met, various error conditions are simulated, the final functions are more comprehensive, and a towing cable DAQ system is more effectively simulated to complete joint debugging with an indoor system.

Description

technical field [0001] The invention relates to a marine seismic exploration streamer simulation system and method which are easy to expand and can be flexibly configured, and belong to the technical field of marine seismic exploration streamers. Background technique [0002] The towing cable system independently developed by my country for the field of marine seismic exploration is developing steadily. The cable length can reach 15km, and a single cable can support up to 2400 data acquisition channels, and can work at a sampling rate of 2ksps to collect 24bits data per channel. As the data rate increases, higher requirements are placed on the design of the DAQ system. However, the structure of the streamer system is complex and expensive, so it is necessary to use a simulation system to replace it in the joint debugging stage of the system. [0003] In the early streamer simulation system, the simulator single board was integrated in a Compact PCI chassis, and each board u...

AI Technical Summary

Problems solved by technology

[0006] The technical solution of the present invention is to overcome the deficiencies of the prior art, provide a marine seismic exploration streamer simulation system and method that is easy to expand and flexibly configure, and solves the problem that the streamer simulation system has a fixed structure, cannot control and process specific node data, and has errors The problem of incomplete simulation can flexibly adjust the topology structure of the simulation system and the node scale of each level to meet the needs of continuous upgrading of the streamer DAQ system; use DDS-based address calculation to serially generate underlying data, and read and write RAM to realize system The forwarding and analysis of local commands realizes the post-processing of local data frames; analyzes and simulates the performance of various error situations reflected in the system interface; it can flexibly adjust the structure and scale, control and process specific node data, and simulate various errors The final function is more comprehensive and more effective in simulating the streamer DAQ system to complete the joint debugging with the indoor system

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