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A Synthetic Weighting Method for Satellite Orbit

A technology of satellite orbit and satellite, which is applied in the field of GNSS high-precision positioning of the global satellite navigation system, can solve the problem that the accuracy of broadcast ephemeris cannot meet the high-precision positioning of users, and achieve the effect of reasonable weighting strategy

Inactive Publication Date: 2019-07-09
WUHAN UNIV
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Problems solved by technology

[0002] The global satellite navigation system GNSS (generally referred to as GPS / GLONASS / Galileo / BDS) has been successfully and widely used in various fields such as navigation and positioning, meteorology, seismology, and natural disaster early warning. High-precision, stable and reliable satellite orbits and clock errors are the above-mentioned One of the important prerequisites for the application, since the accuracy of the broadcast ephemeris (including orbit and clock error information) of various GNSS systems cannot meet the needs of users for high-precision positioning, its main source is the orbit and clock error provided by the IGS (International GNSS Service) product

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  • A Synthetic Weighting Method for Satellite Orbit
  • A Synthetic Weighting Method for Satellite Orbit
  • A Synthetic Weighting Method for Satellite Orbit

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[0013] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit this invention.

[0014] User ranging error URE (User Range Error) directly reflects the impact of satellite orbit error on user positioning. A new weighting method based on user ranging error URE proposed by the present invention will be able to effectively solve the problem of multi-type satellite orbit synthesis. issue of power. It mainly includes the analysis center based on the user ranging error URE and the satellite weighting method.

[0015] The GEO / IGSO / MEO satellite orbit synthesis is to carry out weighted synthesis to the satellite orbits of all analysis centers. T...

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Abstract

The invention provides an integrated weight fixing method of a satellite orbit. The integrated weight fixing method of a satellite orbit includes the steps: inputting the satellite orbit data of each analysis center, and utilizing a sectioning method to perform user range error URE determination on the satellite; and calculating the weight of the analysis center based on the user range error URE and the weight of the satellite, and performing weighted integration on the satellite orbits of all the analysis centers so as to obtain an integrated orbit with high precision and high reliability. The integrated weight fixing method of a satellite orbit overcomes the defect of a weight fixing method taking the absolute deviation of the satellite orbit position and the root mean square error RMS as the basis, thus effectively solving the weight fixing problem for integration of multi-orbit type of satellite orbits, and can satisfy the approximation characteristic of orbital dynamics. The integrated weight fixing method of a satellite orbit has universality for all the satellite navigation systems, and is especially suitable for satellite orbit integration of GEO(Geostationary Orbit) / IGSO(Inclined Geostationary Orbit) / MEO(Medium Earth Orbit) multi orbit types.

Description

technical field [0001] The invention belongs to the technical field of GNSS high-precision positioning of the global satellite navigation system, and relates to a new satellite orbit comprehensive weight determination method; the method is universal to all satellite navigation systems, and is especially suitable for GEO (Geostationary Orbit) / IGSO (Inclined Geostationary Orbit) / MEO (Medium Earth Orbit) multi-orbit satellite orbit synthesis. Background technique [0002] The global satellite navigation system GNSS (generally referred to as GPS / GLONASS / Galileo / BDS) has been successfully and widely used in various fields such as navigation and positioning, meteorology, seismology, and natural disaster early warning. High-precision, stable and reliable satellite orbits and clock errors are the above-mentioned One of the important prerequisites for the application, since the accuracy of the broadcast ephemeris (including orbit and clock error information) of various GNSS systems ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/33G01S19/42
CPCG01S19/33G01S19/421
Inventor 耿涛赵齐乐徐夏炎
Owner WUHAN UNIV
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