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

Abstract

The invention discloses a method 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 method adopts a marine seismic streamer position measuring system based on one-way hydroacoustic ranging to measure the position data of any three water surface units, 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, and the position data of the underwater unit to be measured is calculated; and the positions of points of the marine seismic streamer are obtained by interpolation calculation by using the position data of the underwater units. The method adopts the one-way hydroacoustic ranging, the measuring system which is provided with acoustic wave launchers at the water surface units and provided with acoustic wave receivers at the underwater units is only needed, thus reducing the interference of the acoustic wave launchers in a hydrophone group at the same time of increasing the operating range of the hydroacoustic ranging; and by adopting ranging acoustic wave signals of characteristicspectra, the recognition method of the ranging acoustic wave signals by the underwater units is simplified, and the complexity of the measuring system and measuring method is reduced.

Description

technical field [0001] The invention relates to a method for measuring the position of a marine seismic streamer, in particular to a method for measuring the position of a marine seismic streamer based on one-way underwater acoustic ranging, and 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...

AI Technical Summary

Problems solved by technology

This streamer position measurement method requires the streamer position measurement system to use acoustic wave information signals, while improving the measurement accuracy, it greatly increases the complexity of the measurement system and measurement method, and the equipment cost increases sharply; the streamer position measurement system is required Install acoustic wave receiving equipment outside the streamer, which will cause water flow noise and interfere with adjacent hydrophone arrays

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