Processing method of towrope exploration navigational positioning data

A technology for positioning data and processing methods, which is applied in seismic signal processing, satellite radio beacon positioning systems, instruments, etc., and can solve problems such as the absence of processing technology and processing methods.

Active Publication Date: 2013-07-10
CHINA NAT OFFSHORE OIL CORP +2
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Problems solved by technology

[0004] At present, there is no processing technology and processing method for processing the original navigation and positioning data (P2 / 94 format) into the result navigation data file (P1 / 90 format) for offshore oil exploration navigation and positioning data

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  • Processing method of towrope exploration navigational positioning data
  • Processing method of towrope exploration navigational positioning data
  • Processing method of towrope exploration navigational positioning data

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Embodiment Construction

[0062] In order to make the technical solution of the present invention clearer, the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments in the present application and various manners in the embodiments can be combined with each other.

[0063] A method for processing streamer survey navigation and positioning data may include three stages of data reading, data preprocessing and coordinate solution, wherein,

[0064] In the data reading stage, various positioning data are extracted from the data files in P2 / 94 format, including DGPS data, RGPS data, acoustic data, cable compass data and shipboard gyrocompass data. The original positioning file is divided into two parts: the data header and the data body. The basic information of the project, work area and positioning configuration can be obtained by reading the header, and the positioning ...

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Abstract

The invention provides a processing method of towrope exploration navigational positioning data. The method includes the steps of reading original positioning data from a P2 / 94 format data file collected by an onboard positioning system, wherein the original positioning data comprise differential global positioning system (DGPS) data, RGPS data, acoustic data, cable compass data and onboard gyrocompass data, carrying out preprocessing which comprises gross error detecting, filtering and data standardization processing on the read original positioning data, using a node calculating method to confirm coordinates of positioning nodes in the preprocessed original positioning data, converting accurate positions of the positioning nodes into navigation data of a P1 / 90 format, and storing the navigation data. The method can process the original navigation data of the P2 / 94 format into the navigation data of the P1 / 90 format fast and efficiently.

Description

technical field [0001] The invention relates to the technical field of offshore petroleum seismic exploration, and more particularly, relates to a processing method for navigation and positioning data of offshore streamer exploration. Background technique [0002] In marine seismic exploration, towline seismic exploration is the main exploration method. The seismic exploration ship tows one or more cables. With the gun array excited, the towed cable collects seismic wave reflection data, and the shipboard positioning equipment collects navigation and positioning data. Offshore seismic exploration is a combined cooperative operation mode, mainly composed of integrated navigation system, seismic data acquisition system, towline positioning and control system, seismic source system, etc. The integrated navigation system is the control and command center of offshore seismic exploration operations, and the control ship The collaborative work of various systems is carried out, and...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28G01S19/48
Inventor 阮福明王斌朱耀强赵齐乐黄劲松
Owner CHINA NAT OFFSHORE OIL CORP
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