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System for measuring position of marine seismic streamer based on one-way hydroacoustic ranging

A measurement system, marine technology, used in seismology, seismic signal receivers, water resource assessment, etc. for areas covered by water, which can solve the problem of interfering with hydrophone arrays, increasing system complexity, increasing equipment costs, etc. problem, to achieve the effect of simplifying the identification method, reducing the complexity of the system and reducing the interference

Inactive Publication Date: 2010-06-30
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This streamer position measurement system uses acoustic information signals, which greatly increases the complexity of the system while improving the measurement accuracy, causing a sharp increase in equipment costs; the acoustic wave receiving equipment installed outside the streamer will cause water flow noise, interference adjacent hydrophone array

Method used

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  • System for measuring position of marine seismic streamer based on one-way hydroacoustic ranging
  • System for measuring position of marine seismic streamer based on one-way hydroacoustic ranging
  • System for measuring position of marine seismic streamer based on one-way hydroacoustic ranging

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Embodiment Construction

[0025] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings. like figure 1 , figure 2 and image 3 As shown, the present invention includes a marine seismic survey vessel onboard system, a surface unit, a subsea unit, a data cable and a power supply cable. The onboard system is installed on the marine seismic survey vessel 1 . The shipboard system consists of computer hardware, control software and data processing software. The control software is used to control the entire towline position measurement system, especially to send control instructions to each surface unit and underwater unit. The data processing software is used to process and calculate the data transmitted by each surface unit and underwater unit.

[0026] Several water surface units are respectively installed on the marine seismic survey ship 1, the bow guider 2 of each marine seismic streamer 6, the cable tail buoy 5 and the b...

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Abstract

The invention discloses a system for measuring position of a marine seismic streamer based on one-way hydroacoustic ranging and belongs to the technical field of marine seismic survey. The system comprises a ship-borne system of a marine seismic survey ship, water surface units, underwater units, a dada cable and a power supply cable. The system adopts the position data of any three water surface units, the vertical position data of an underwater unit to be measured and the distances between the three water surface units and the underwater unit to be measured to calculate the position data of the underwater unit to be measured; and the system uses the position data of the underwater units to obtain the positions of points of the marine seismic streamer by interpolation calculation. The system adopts the one-way hydroacoustic ranging, namely, the water surface units are only provided with acoustic wave launchers and the underwater units are only provided with acoustic wave receivers, thus increasing the operating range of the hydroacoustic ranging and reducing the interference of the acoustic wave launchers in a hydrophone group; and by adopting ranging acoustic wave signals of characteristic spectra, the recognition method of the ranging acoustic wave signals by the underwater units is simplified, and the system complexity is reduced.

Description

technical field [0001] The invention relates to a marine seismic streamer position measurement system, in particular to a marine seismic streamer position measurement system based on one-way underwater acoustic ranging, which belongs to the technical field of marine seismic exploration. Background technique [0002] A marine seismic survey system usually consists of a marine seismic survey ship, a seismic source, a marine seismic streamer and a streamer control device. A marine seismic survey vessel is usually one or several surface vessels. The seismic source is usually an air gun or an array of air guns. A marine seismic streamer, referred to as a streamer, is usually one or several underwater cables about several kilometers long, and a hydrophone array is installed inside it to receive seismic reflection waves. The streamer control device is used to control the position of the marine seismic streamer. According to the installation position, it can be divided into a cabl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/20G01V1/38
CPCY02A90/30
Inventor 张维竞段磊陈峻张小卿王春杰
Owner SHANGHAI JIAO TONG UNIV
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