A Calculation Method Applicable to Pseudo-Lite Position

A calculation method and pseudolite technology, applied in the field of pseudolite positioning, can solve the problem that the GPS broadcast ephemeris cannot describe the position of stationary objects relative to the ground, and achieve the effect of maintaining high consistency and simplifying the algorithm.

Active Publication Date: 2021-11-12
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

[0004] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a calculation method suitable for pseudolite positions, so as to solve the problem that the GPS broadcast ephemeris cannot describe the position of stationary objects relative to the ground in the prior art

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  • A Calculation Method Applicable to Pseudo-Lite Position
  • A Calculation Method Applicable to Pseudo-Lite Position
  • A Calculation Method Applicable to Pseudo-Lite Position

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[0046] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0047] It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the compo...

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Abstract

The present invention proposes a calculation method suitable for pseudolite positions, including: judging whether it is a pseudolite system; if so, reading the coordinate constant of the pseudolite system; calculating normalized time; calculating the average angular velocity of the satellite; calculating respectively Mean anomaly angle, deviating anomaly angle, true anomaly angle, ascending node angular distance, perturbation correction item at the time of signal transmission; calculate ascending node angular distance after perturbation correction, satellite vector length and orbit inclination angle; calculate pseudolites Position on the orbital plane; calculate the right ascension of the ascending node at the time of signal launch; calculate the position of the pseudolite in the ground-fixed coordinate system. The invention only modifies the basic earth parameters in the satellite position algorithm, so that the space position of the pseudolite can be calculated by using four ephemeris parameters, and solves the problem that the original broadcast ephemeris cannot represent the coordinates of ground stationary objects.

Description

technical field [0001] The invention relates to the technical field of pseudolite positioning, in particular to a calculation method suitable for pseudolite positions. Background technique [0002] The navigation message contains the time and position information of the satellite, which is an indispensable starting data for navigation and positioning. However, since the pseudolite is generally fixed at a known position on the ground or near the ground as a "ground satellite", unlike GPS satellites that operate according to the designed orbit, the original ephemeris model cannot express the position of the pseudolite. [0003] At present, the pseudolite coordinates are not calculated through the ephemeris parameters of the navigation message, but are directly written into the navigation message after a simple transformation. This custom navigation message format is not compatible with the navigation parameter extraction algorithm of the original GPS navigation message format...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/25G01S19/08
Inventor 纪元法宁昌儒孙希延付文涛庾新林李有明赵松克严素清符强王守华黄建华杜保强
Owner GUILIN UNIV OF ELECTRONIC TECH
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