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A Genetic Algorithm Based Inversion Method for Incoherent Scatter Radar Data

A technology of incoherent scattering and genetic algorithm, which is applied in the directions of genetic rules, radio wave reflection/reradiation, genetic models, etc., to achieve the effects of reducing errors, good implicit parallelism, and reducing impact

Active Publication Date: 2021-07-13
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The technical solution problem of the present invention is: aiming at the data inversion problem of incoherent scatter radar, overcomes the deficiencies in the prior art, provides a kind of incoherent scatter radar data inversion method based on genetic algorithm, solves the problem of using incoherent scatter radar data The problem of performing ionospheric multi-parameter inversion to obtain robust and reliable ionospheric parameter results

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  • A Genetic Algorithm Based Inversion Method for Incoherent Scatter Radar Data
  • A Genetic Algorithm Based Inversion Method for Incoherent Scatter Radar Data
  • A Genetic Algorithm Based Inversion Method for Incoherent Scatter Radar Data

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[0037] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0038] Such as figure 1 Shown, the concrete realization steps of the present invention are as follows:

[0039] According to the detection principle of incoherent scattering radar, when the modulated signal is received after being scattered by the ionosphere, the expression of the radar signal obtained by filtering is:

[0040]

[0041] Among them, p(t) is the filter envelope of the signal receiver, is the received signal, env(t) is the envelope of the modulated signal, e(t,d 3 r) is the random scattering signal of electrons in the unit volume at r at time t, r is the distance between the detection target and the radar, and s(r) is the propagation time of the signal from transmission to reception. Then the autocorrelation function of the ionospheric scatter signal detected by the incoherent scatter radar is:

[0042]

[0043] in, is a par...

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Abstract

The present invention relates to a genetic algorithm-based inversion method for incoherent scatter radar data. According to the autocorrelation function of the ionospheric scatter signal detected by the incoherent scatter radar, combined with the modulation and filter envelope of the signal, the system is integrated and discretized. Complete the modeling of the ionospheric multi-parameter inversion system, determine the fitness evaluation function; take an ionospheric parameter as an element, arrange it in turn to form an ionospheric parameter sample, and generate an ionospheric parameter sample according to the number of samples set by the genetic algorithm The initial set of the initial set, and the parent screening is completed according to the fitness evaluation; through the crossover and mutation calculation of the parent ionospheric parameter sample set, the ionospheric parameter sample with the best fitness is obtained circularly, which is the reflection of each target parameter of the final ionosphere. Play the result. The invention has the advantages of accurate results, high reliability, less input information, good robustness, etc., and can be used for data processing of non-coherent scattering radar systems, space physics and space weather research and the like.

Description

technical field [0001] The invention relates to a non-coherent scattering radar data inversion method based on a genetic algorithm, which can be used for data processing of the non-coherent scattering radar system, such as ionosphere multi-parameter monitoring, space weather research and the like. Background technique [0002] The ionosphere is a part of the ionized plasma region 60km to 1000km above the earth's surface. It is connected to the magnetosphere above and connected to the atmosphere below. It is an important component of the space between the sun and the earth. The ionosphere is closely coupled with the upper and lower layers through various energy processes, and various energy burst processes on the magnetosphere and even the surface of the sun can respond in the ionosphere, so it is called the display screen of space weather. At the same time, due to the impact of the ionosphere on the propagation of radio waves, it is also the key layer most closely related to...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/10G01S13/88G01S7/288G06N3/12
CPCG01S7/288G01S13/10G01S13/88G06N3/126
Inventor 王俊逸乐新安赵必强丁锋万卫星
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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