SAR and ISR-based electron density prediction method, system and device

A technology of electron density and prediction method, applied in radio wave measurement systems, measurement devices, reflection/re-radiation of radio waves, etc., can solve the problem that the accuracy of three-dimensional electron density data cannot meet the requirements, and make up for the lack of spatial resolution. , to achieve the effect of convenience and low cost

Active Publication Date: 2020-09-22
SHENZHEN UNIV
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Problems solved by technology

[0006] In view of the deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide users with a three-dimensional electron density prediction method and electronic equipment based on polarimetric SAR and ISR, so as to overcome the inability to meet the three-dimensional electron density data accuracy in the prior art. deficiency of needs

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  • SAR and ISR-based electron density prediction method, system and device
  • SAR and ISR-based electron density prediction method, system and device
  • SAR and ISR-based electron density prediction method, system and device

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[0038] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0039] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be understood that when an element is referred to as being "...

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Abstract

The invention provides an SAR and ISR-based electron density prediction method, system and device, and the method comprises the steps: obtaining the SAR data and ISR data of an ionized layer in a target region, and calculating the total electron content distribution according to the SAR data; and predicting the three-dimensional electron density according to the calculated total electron content distribution and the electron density profile of the ISR data. According to the embodiment of the invention provides a method and equipment, the high spatial resolution of the synthetic aperture radardata is combined with the high-precision actually measured electron density profile of the incoherent scattering radar; the collected SAR data is used for estimating the Faraday rotation angle, then the total electron content is inversed, high-resolution three-dimensional electron density estimation is achieved in combination with the actually measured ISR electron density profile, and the high-precision three-dimensional electron density is rapidly obtained with low cost.

Description

technical field [0001] The present invention relates to the technical field of atmospheric physics radio waves, in particular to a three-dimensional electron density prediction method, system and equipment based on polarization SAR and ISR. Background technique [0002] The ionosphere refers to the part of the atmosphere above 60 kilometers, and is an important part of the sun-terrestrial space system, where there are a large number of free electrons and ions. The ionosphere will affect the propagation speed change, refraction, scattering, and polarization plane rotation of the radio waves passing through it, and introduce errors to the earth observation technology based on radio waves, such as the ionospheric delay of the Global Positioning System (GPS), Synthetic aperture radar (SAR) phase lead, group delay and Faraday rotation (FR), etc. Therefore, studying the ionosphere can help us further understand the entire solar-terrestrial space system, and can also provide ionos...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41G01S13/90G06F17/18
CPCG01S7/418G01S13/9094G06F17/18
Inventor 汪驰升朱武陈镜渊胡忠文张德津涂伟周宝定张勤李清泉
Owner SHENZHEN UNIV
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