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Ionized layer incoherent scattering radar incoherent scattering spectrum modeling method

A technology of incoherent scattering and modeling method, which is applied in the field of incoherent scattering spectrum modeling of ionospheric incoherent scattering radar, and can solve the problems of plasma distribution function deviation and so on.

Inactive Publication Date: 2015-12-23
NANCHANG UNIV
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Problems solved by technology

[0004] In the process of studying the incoherent scattering spectrum, which involves the probability distribution function of the ionospheric plasma and the concept of fluctuating density, the current incoherent radar experiment processing data is still based on the most basic Maxwell di...

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  • Ionized layer incoherent scattering radar incoherent scattering spectrum modeling method
  • Ionized layer incoherent scattering radar incoherent scattering spectrum modeling method
  • Ionized layer incoherent scattering radar incoherent scattering spectrum modeling method

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Embodiment Construction

[0052] First of all, in the case of a single component, based on the basic concepts of the probability distribution function and fluctuation density of the ionospheric plasma, in the case of an idealized scattering spectrum model, that is, without considering the magnetic field and without collision, the electrons and ions can be obtained. Velocity distribution function,

[0053] f e 0 = exp ( - v 2 / a 2 ) / a π

[0054] f i 0 = exp ( - v 2 / b 2 ) / b π

[0055] The above formula a=(2k b T e / m e ) 1 / 2 Represents the average thermal velocity of electrons, b=(2k b T i / m i ) 1 / 2 Is the average thermal velocity of ions, k b Is Boltzmann's constant, which is subject to an arbitrary distribution of velocity distribution functions. Assuming that the electron and ion velocity distribution functions obey the Maxwell distribution, the spectral density function of plasma is studie...

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Abstract

According to the invention, research and analysis are carried out on a plasma scattering spectrum without considering collision, a collision plasma scattering spectrum without considering the magnetic field and an incoherent scattering power spectrum under different ion component percentages respectively based on fundamental principles of an incoherent scattering theory, and an ionized layer incoherent scattering radar incoherent scattering spectrum modeling method is provided. Besides the ability of simulating the three types of fundamental scattering spectra, the method provided by the invention can also simulate differently encoded scattering spectra and scattering spectra with different heights. Analysis is carried out on an echo simulation result of radar signals, and parameters extracted by a simplified algorithm are consistent with IRI.

Description

Technical field [0001] The present invention is a method for modeling incoherent scattering spectrum of ionospheric incoherent scattering radar, which is suitable for the design of a simulation system for studying the incoherent scattering spectrum of ionospheric incoherent scattering radar. Background technique [0002] The ionosphere is an important part of the near-Earth space environment. A variety of disturbances near the ground can be uploaded to the ionosphere and interact with ionized components. They have important effects on radio communications, satellite navigation, measurement, and human space activities. There are also many research methods and methods for the layer. In addition to satellites and rockets, they also use ionospheric plumbometers, GPS scintillation receivers and other methods. With the development of radar technology, the transmission power, receiving sensitivity, and antenna gain are all available. Great improvements have made it possible to detect we...

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Application Information

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IPC IPC(8): G01S7/40
CPCG01S7/4052
Inventor 姚明邓晓华鲁自清张梁民
Owner NANCHANG UNIV
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