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Method of inverting strongly-disturbed ionospheric parameters by using plasma line cascade structure

A cascade structure, plasma technology, applied in radio wave measurement system, using re-radiation, radio wave reflection/re-radiation and other directions, can solve the difficulty of ionospheric parameter inversion in strong disturbance area, and the use of incoherent scattering theory is limited. Limits and other issues to achieve the effect of improving the inversion accuracy

Active Publication Date: 2016-06-22
XIDIAN UNIV
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Problems solved by technology

Solve the problem existing in the existing technology that in severe disturbance areas, the incoherent scattering power spectrum can be enhanced by several orders of magnitude, the use of the modified incoherent scattering theory will be limited, so that the inversion of ionospheric parameters in strong disturbance areas encounter great difficulty

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  • Method of inverting strongly-disturbed ionospheric parameters by using plasma line cascade structure
  • Method of inverting strongly-disturbed ionospheric parameters by using plasma line cascade structure
  • Method of inverting strongly-disturbed ionospheric parameters by using plasma line cascade structure

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Embodiment Construction

[0011] A method for retrieving strongly disturbed ionospheric parameters based on a cascaded structure of incoherently scattered plasma line power spectrum of the present invention comprises the following steps:

[0012] 1) From the incoherent scatter radar observation data, extract the abnormal incoherent scatter plasma line power spectrum with a cascade structure in the strongly disturbed region caused by the ionospheric heating experiment. The specific implementation method is:

[0013] According to the electric field threshold required for parametric decay instability excitation, it is judged whether the parametric decay instability has occurred in this experiment. The formula for calculating the electric field threshold is:

[0014] E P D I 2 = 4 n e k b ...

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Abstract

The invention discloses a method of inverting strongly-disturbed ionospheric parameters by using a plasma line cascade structure. The method comprises steps: (1) an incoherent scattering radar is used for observing data, an abnormal incoherent scattering plasma line power spectrum with a cascade structure for a strongly-disturbed area caused by an ionospheric heating experiment is extracted; (2) a correlated peak frequency difference in the abnormal incoherent scattering plasma line power spectrum with a cascade structure is counted; (3) a low-frequency wave frequency appearing in the ionospheric heating process is determined; (4) the counted frequency difference in the second step and the low-frequency wave frequency calculated in the third step are compared to determine which low-frequency wave in instable parametric decay in the case of ionospheric heating generates the cascade structure; and (5) according to the result in the fourth step, the electron density and the electron temperature are acquired according to an fpi calculation formula. The method can improve the inversion precision to a large degree, and is a new method of acquiring the strongly-disturbed ionospheric parameters.

Description

technical field [0001] The invention relates to a method for retrieving strongly disturbed ionospheric parameters based on the cascaded structure of the abnormal incoherent scattered plasma line power spectrum, using the cascaded structure of the abnormally incoherent scattered plasma line power spectrum and the theory of parameter decay instability A method for inverting strongly disturbed ionospheric parameters, which can greatly improve the inversion accuracy, is a new method for obtaining strongly disturbed ionospheric parameters. Background technique [0002] The detection of the state of the disturbed ionospheric region is one of the important parts of the experimental and theoretical research on the anomalous characteristics of ionospheric heating. Incoherent scatter radar is one of the most powerful means of ionospheric ground detection. At present, the inversion of ionospheric parameters based on incoherent scattering radar data uses the equilibrium incoherent scat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/95
CPCG01S13/95Y02A90/10
Inventor 李海英程木松徐彬吴振森吴军
Owner XIDIAN UNIV
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