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Ionosphere chromatography method and device

A chromatography device and ionospheric technology, applied in the field of ionospheric chromatography methods and devices, can solve the problems of incomplete consideration of influencing factors, errors in MART algorithm inversion results, etc., and achieve the effect of improving inversion accuracy and accurate iterative results

Active Publication Date: 2019-04-19
PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU
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Problems solved by technology

[0011] The purpose of the present invention is to provide a method and device for ionospheric tomography, which is used to solve the problem that the inversion results of the MART algorithm have errors due to incomplete consideration of the influencing factors when constructing the combined quantity in the existing MART algorithm

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  • Ionosphere chromatography method and device
  • Ionosphere chromatography method and device
  • Ionosphere chromatography method and device

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] Ionospheric chromatography method embodiment:

[0035] This embodiment provides a kind of ionospheric tomography method (referred to as IMART algorithm), and its corresponding flow chart is as follows figure 2 As shown, it specifically includes the following steps:

[0036] (1) Acquisition of observation data: determine the scope of the target area, and select the observation data of the satellite navigation system and the data of the ionospheric altimeter within the scope of the target area.

[0037] That is, in step (1), it is necessary to determine the latitude and longitude range, altitude range, and observation period of the reconstruction area, and obtain the GNSS observation data and ionospheric altimeter data of the invers...

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Abstract

The invention relates to an ionosphere chromatography method and device, and the method comprises the steps: building a new combination quantity according to the combination quantity and intercept value in an MART algorithm, determining an iterative equation of the electron density of an ionosphere according to the new combination quantity, and carrying out the chromatography inversion of the ionosphere according to the iterative equation, so as to obtain the electron density. According to the invention, the intercept value and the electron content in the pixel are used as the combination quantity to construct a new combination quantity, and the electron content and the intercept value are comprehensively considered, so that the inversion precision is effectively improved, and the iteration result is more accurate.

Description

technical field [0001] The invention relates to an ionospheric chromatography method and device, belonging to the technical field of geodesy and atmospheric detection. Background technique [0002] The ionosphere is the partially ionized upper atmosphere extending from about 50 to 1000 km to the plasmasphere, containing enough free electrons to affect radio wave propagation. The distribution of electron density in the ionosphere is affected by many natural factors such as solar radiation and particle precipitation, resulting in great differences in the distribution of free electrons in time and space. Therefore, from the perspective of satellite applications and the understanding of ionospheric dynamics, the real-time determination of ionospheric electron density distribution is particularly important. [0003] Ionospheric tomography uses the measured electron content of the ionosphere to invert the electron density on the path. In the process of ionospheric tomography, con...

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Application Information

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IPC IPC(8): G06F17/11G06F17/17
CPCG06F17/11G06F17/17Y02A90/10
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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