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Ionized layer chromatography method and system based on multi-constellation GNSSs

A tomography system and ionosphere technology, applied in satellite radio beacon positioning systems, radio wave measurement systems, measurement devices, etc., can solve the problem of low accuracy of ionospheric tomography methods, and achieve improved accuracy and reliability. sexual effect

Inactive Publication Date: 2019-04-12
PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU
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Problems solved by technology

[0005] The purpose of the present invention is to provide an ionospheric tomography method and system based on multi-constellation GNSS, to solve the problem that the accuracy of the existing ionospheric tomography method is not high

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  • Ionized layer chromatography method and system based on multi-constellation GNSSs
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  • Ionized layer chromatography method and system based on multi-constellation GNSSs

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Embodiment Construction

[0059] Embodiment of ionospheric tomography method based on multi-constellation GNSS:

[0060] This embodiment provides an ionospheric tomography method based on multi-constellation GNSS, such as figure 1 shown, including the following steps:

[0061] (1) Use multiple satellite navigation systems to conduct ionospheric tomography, determine the scope of the target area, and select the observation data corresponding to each satellite navigation system within the scope of the target area;

[0062] (2) Calculate the total electronic content corresponding to each satellite navigation system;

[0063] (3) Calculate the coefficient between the total electron content of each satellite navigation system and the ionospheric electron density sought to obtain the coefficient matrix, and obtain the relationship between the total electron content of the satellite navigation system and the ionospheric electron density sought according to the coefficient matrix Relationship;

[0064] (4) ...

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Abstract

The invention relates to an ionized layer chromatography method and system based on multi-constellation GNSSs. The ionized layer chromatography method comprises the steps that multiple satellite navigation systems are adopted to carry out the ionized layer chromatography, firstly, an object region range is determined, observation data corresponding to all the satellite navigation systems within the object region range are selected; then total electron content corresponding to all the satellite navigation systems is calculated, and the relation between the total electron content of the satellite navigation systems and desired ionized layer electron density is obtained; and finally, the relation between the total electron content of the satellite navigation systems and the desired ionized layer electron density is subjected to inversion calculation, and the ionized layer electron density of the object region range is obtained by the calculation. The ionized layer chromatography operationis carried out through multiple different satellite navigation systems, and compared with an existing operation which is carried out only through one kind of satellite navigation systems, the accuracy of the ionized layer electron density obtained by the inversion is improved greatly, and the reliability of the ionized layer chromatography method is improved equally.

Description

technical field [0001] The invention relates to an ionospheric tomography method and system based on multi-constellation GNSS. Background technique [0002] The ionosphere is the part of the atmosphere that contains a large number of free electrons, the movement of which can significantly affect the propagation of radio waves. From the perspective of satellite applications and understanding of ionospheric dynamics, it is particularly important to determine the real-time distribution of ionospheric electron density (Ionospheric Electron Density, IED). GNSS (Global Navigation Satellite System, GNSS) can provide the total electron content (Total Electron Content, TEC) of the receiver along the satellite ray path, making GNSS technology one of the main tools for ionospheric detection. Tomography technology was first used in the fields of biology and medicine. Computerized Ionospheric Tomography (CIT) combines tomography technology with satellite signals, and uses the electron c...

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Application Information

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IPC IPC(8): G01S19/07
CPCG01S19/07
Inventor 朱新慧张龙龙王刃孙付平刘婧
Owner PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU
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