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Ionosphere modeling method based on ionosphere warp-wise change characteristics

A modeling method and ionospheric technology, applied in radio wave measurement systems, satellite radio beacon positioning systems, measurement devices, etc., can solve problems such as waste of financial and material resources, and achieve the effect of reducing the number of base stations and increasing the distance between base stations

Pending Publication Date: 2022-04-15
武汉星辰北斗科技有限公司
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Problems solved by technology

However, in order to obtain high-precision ionospheric models, it is usually necessary to establish dense CORS reference stations, resulting in a waste of financial and material resources

Method used

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  • Ionosphere modeling method based on ionosphere warp-wise change characteristics
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  • Ionosphere modeling method based on ionosphere warp-wise change characteristics

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Embodiment 1

[0016] Implementation Example 1: Reference Figure 1 to Figure 2 , a kind of ionospheric modeling method based on ionospheric change characteristic, described method comprises the following steps:

[0017] S01. Obtain the CORS base station observation data in the strip-shaped area distributed along the meridian, and estimate the R of different CORS base stations according to the high-precision coordinates of the CORS base station and the high-precision satellite orbit and clock error information released by IGS i When the same GNSS satellite S is observed at the same time t, the ionospheric electron density information at the puncture point is obtained

[0018] S02, the ionospheric electron density information obtained in step S01 Group by time to obtain the electron density information of the ionospheric puncture point in the time-sequenced band area electron density information for each moment Fitting is performed respectively to obtain the ionospheric electron densi...

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Abstract

The invention discloses an ionosphere modeling method based on ionosphere warp change characteristics, and the method comprises the following steps: S01, obtaining CORS base station observation data in a strip-shaped region distributed along a longitude line, according to the high-precision coordinates of the CORS base stations and high-precision satellite orbits, clock errors and other information issued by the IGS, ionospheric electron density information at the puncture point is obtained when different CORS base stations observe the same GNSS satellite at the same moment; and S02, grouping the ionosphere electron density information obtained in the step S01 according to time to obtain ionosphere puncture point electron density information in a strip-shaped region in sequential arrangement, and fitting the electron density information at each moment to obtain an ionosphere electron density model at different moments in the strip-shaped region. The problem that in the prior art, in order to obtain a high-precision ionosphere model, dense CORS base stations need to be established, and financial resources and material resources are wasted is solved.

Description

technical field [0001] The invention relates to the technical field of ionospheric modeling, in particular to an ionospheric modeling method based on the ionospheric meridional variation characteristics. Background technique [0002] In the whole earth sphere system, the ionosphere is in a special position, where there are enough free electrons, and the ionosphere and the magnetosphere are tightly coupled together through the electrodynamic coupling effect of the large-scale field-directed current. The neutral components in the ionosphere are continuously ionized by solar radiation, while the charged oxygen ions and nitrogen ions continuously capture free electrons and synthesize neutral molecules. The balance of the two processes constitutes the plasma. Solar radiation is the main factor affecting the activity of the ionosphere, and geomagnetism also has a significant impact on the ionosphere. In the process of PPP positioning, the ionospheric delay mainly affects the ambi...

Claims

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Application Information

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IPC IPC(8): G01S19/37
Inventor 孔建许超钤胡明贤彭文杰张良
Owner 武汉星辰北斗科技有限公司
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