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A Data-Driven Approach to Empirical Ionospheric Models Based on GNSS Measurements

A driving method and model data technology, which is applied in the direction of measurement devices, radiation measurement, radio wave measurement systems, etc., can solve the problems of limiting the application range of the model, unable to accurately give real-time change information, etc., and achieve the effect of improving the prediction accuracy

Active Publication Date: 2021-08-06
中国电波传播研究所
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Problems solved by technology

As a general climatological ionospheric model, the empirical ionospheric model can only describe the monthly average change state of the ionosphere, but cannot accurately provide real-time change information in the "meteorology" category of the ionosphere, which limits the scope of application of the model

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  • A Data-Driven Approach to Empirical Ionospheric Models Based on GNSS Measurements
  • A Data-Driven Approach to Empirical Ionospheric Models Based on GNSS Measurements
  • A Data-Driven Approach to Empirical Ionospheric Models Based on GNSS Measurements

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Embodiment 1

[0064] Example 1, such as figure 1 As shown, the present embodiment discloses a GNSS measurement-based empirical ionospheric model data-driven method, including the following steps:

[0065] Step 1. Establish a regional or global ionospheric vertical total electron content (VTEC) distribution calculation model based on GNSS measured data:

[0066] Establish GNSS-based code pseudo-range measurement equation:

[0067]

[0068] Where: P 1 and P 2 represent f respectively 1 and f 2 The code pseudo-range measurement value observed on the frequency band, ρ' represents the real distance between the satellite S and the receiver R, I represents the ionospheric delay, c is the speed of light, respectively represent the hardware delay of satellite S in the corresponding frequency band, Represent the hardware delay of satellite S in the corresponding frequency band;

[0069] Establish the GNSS-based carrier phase measurement equation:

[0070]

[0071] Among them: L 1 a...

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Abstract

The invention discloses an empirical ionospheric model data-driven method based on GNSS measurement, comprising the following steps: Step 1, establishing a regional or global ionospheric vertical total electron content distribution calculation model based on GNSS measured data; Step 2, based on the ionosphere The vertical total electron content information establishes the optimal solar radiation flux F10.7 index driving model: step 3, based on the established ionospheric vertical total electron content distribution calculation model and the optimal solar radiation flux F10.7 index driving model, the experience The ionospheric model is driven and updated, and the data-driven ionospheric tilt total electron content and electron density information is output. The present invention establishes a GNSS measurement-based empirical ionospheric model data driving method, using GNSS measured data to drive and update the solar radio flux F10.7 index of the empirical ionospheric model, thereby effectively improving the output parameters of the empirical ionospheric model. prediction accuracy.

Description

technical field [0001] The invention belongs to the field of ionosphere research and application, in particular to an empirical ionosphere model data driving method based on GNSS measurement in the field. Background technique [0002] The empirical ionospheric model is constructed based on a variety of ground-based and satellite measurement data, which can describe the "climate" change state of the ionosphere in time and space dimensions. The model has important application value in the field of radio engineering research and design, and is widely used It is used in many systems such as short wave communication, satellite communication, satellite navigation, measurement, control and surveillance. As a general climatological ionospheric model, the empirical ionospheric model can only describe the monthly average change state of the ionosphere, but cannot accurately provide real-time change information in the "meteorology" category of the ionosphere, which limits the scope of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01T1/29G01S19/37G06F17/11
CPCG01S19/37G01T1/2914G01T1/2992G06F17/11
Inventor 欧明陈亮冯健许娜陈龙江吴家燕於晓刘钝甄卫民
Owner 中国电波传播研究所
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