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Train integrated navigation method based on precise point positioning

A precise single-point positioning and integrated navigation technology, applied in navigation, mapping and navigation, satellite radio beacon positioning system and other directions, can solve the problem of no in-depth research on the integrated navigation method of trains, etc., to improve short-term accuracy and high flexibility , improve the effect of continuity

Active Publication Date: 2018-06-29
BEIJING JIAOTONG UNIV
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Problems solved by technology

[0005] At present, there is no in-depth research on the train integrated navigation method based on precise single point positioning in the prior art

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  • Train integrated navigation method based on precise point positioning
  • Train integrated navigation method based on precise point positioning
  • Train integrated navigation method based on precise point positioning

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Embodiment Construction

[0041] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0042]Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be understood...

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Abstract

The invention provides a train integrated navigation method based on precise point positioning. The method comprises the following steps: firstly, recording an original observation data file by a train satellite receiver; secondly, calculating an issued high-precision satellite orbit and a satellite clock error product according to an IGS (Inertial Guidance System) data processing center, resolving position coordinates of train operation, and calculating correction parameters such as whole cycle ambiguity and receiver clock errors; thirdly, combining the correction parameters with train three-dimensional attitude information with high update rate, which is measured by an inertial navigation system to provide high-precision train positioning information and improve positioning continuity and short-time precision. According to the method, the problem that a differential reference station has distance limit for satellite positioning precision can be solved by using double-frequency phaseand a pseudo-range observation value of a single satellite receiver; train position information with high precision and high update rate is obtained by combining with the inertial navigation system, and thereby higher flexibility and lower construction and maintenance cost are realized.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a precise single point positioning-based integrated train navigation method. Background technique [0002] In the global satellite navigation system and inertial navigation system (GNSS / INS) integrated navigation system, considering the influence of GNSS observation errors (ephemeris errors, clock error, etc.), most GNSS / INS integrated systems generally use differential global positioning The system (Differential Global Navigation Satellite System, DGNSS) is combined with INS to provide higher navigation and positioning accuracy. However, due to the limitation of the distance of satellite positioning reference stations and the cost of observation, especially in some areas where reference stations cannot be set up, the combination of DGNSS / INS will be subject to many restrictions, thereby reducing the positioning accuracy. [0003] Precise point positioning technol...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/49G01C21/16
CPCG01C21/165G01S19/49
Inventor 姜维蔡伯根陈思睿上官伟王剑陆德彪刘江
Owner BEIJING JIAOTONG UNIV
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