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Single-base-station long-distance offshore real-time dynamic positioning method

A real-time dynamic positioning, long-distance technology, applied in satellite radio beacon positioning systems, measuring devices, instruments, etc., to solve problems such as expensive and limited communication conditions

Active Publication Date: 2018-05-25
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, PPP technology is not only limited by communication conditions, but also requires expensive hardware network infrastructure support

Method used

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  • Single-base-station long-distance offshore real-time dynamic positioning method
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  • Single-base-station long-distance offshore real-time dynamic positioning method

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Embodiment Construction

[0061] The specific implementation manner of the present invention will be described in more detail below with reference to schematic diagrams. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0062] An embodiment of the present invention provides a single base station long-distance maritime real-time dynamic positioning method, specifically, as figure 1 as shown, figure 1 It is a flow chart of a method for real-time dynamic positioning of a single base station at sea in an embodiment of the present invention. The method includes the following steps: first, at the server end, receive the RTCM format data stream of the reference station in real time, and decode it to obtain the ephemeris The data is o...

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Abstract

The invention provides a single-base-station long-distance offshore real-time dynamic positioning method. A short message function of a Beidou navigation system is sued to transmit a simplified differential correction number, the difficulty that offshore communication is inconvenient or even there is no communication offshore is overcome, different observation values in different frequencies of Bedou and GPS satellite navigation systems are utilized to develop a stable, rapid and accurate flowing-end real-time positioning algorithm aimed at the special offshore environment, correction number play software of a corresponding reference station and real-time moving station positioning software are realized, and a single-base-station based long-distance offshore real-time dynamic positioning system is established.

Description

technical field [0001] The invention relates to the field of GNSS precise positioning, especially long-distance high-precision real-time dynamic positioning at sea. Background technique [0002] Since the advent of the GPS system, the Global Navigation Satellite System (GNSS) has been widely used in various outdoor positioning and navigation applications. Real-time high-precision positioning is an important research field of GNSS. At present, real-time kinematic (RTK) technology, precise point positioning (PPP) technology and their extended network RTK technology and PPP-RTK technology are representatives of high-precision GNSS positioning technology. However, these technologies have their own shortcomings in marine applications. [0003] PPP technology requires precise ephemeris, precise clock and other information, and these information are released on a specific website with a delay of about one week. As for some ultra-fast precise ephemeris and real-time precise ephem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/42G01S19/44
CPCG01S19/425G01S19/44
Inventor 李博峰张治腾
Owner TONGJI UNIV
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