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Electromagnetic environment complexity assessment method based on time-frequency space-energy modulation domain analysis

An electromagnetic environment and complex technology, applied in the direction of measuring electricity, measuring electrical variables, electromagnetic field characteristics, etc.

Inactive Publication Date: 2021-12-24
成都众享天地网络科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that at present, there is a big controversy on the selection of evaluation indicators for the complexity of the electromagnetic environment, and successively proposed measurement indicators such as signal strength, frequency occupancy, frequency coincidence degree, and electromagnetic equipment anti-interference degree

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  • Electromagnetic environment complexity assessment method based on time-frequency space-energy modulation domain analysis
  • Electromagnetic environment complexity assessment method based on time-frequency space-energy modulation domain analysis
  • Electromagnetic environment complexity assessment method based on time-frequency space-energy modulation domain analysis

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Embodiment

[0030] The present invention is based on the electromagnetic environment complexity evaluation method based on the time-frequency-space energy modulation domain analysis, and the key technology involved in the evaluation method based on the time-frequency-space energy modulation domain quantitative analysis of the electromagnetic environment complexity is the index system for complex electromagnetic environment complexity evaluation Construct. The general complexity of the battlefield electromagnetic environment is used to quantitatively describe the objective, common, and macroscopic characteristics of the battlefield electromagnetic environment on a specific battlefield. Make a preliminary estimate of the complexity. The characteristics of a complex electromagnetic environment include a wide range of space, random time distribution, crowded and overlapping frequencies, uneven distribution of capabilities, high signal density, complex signal patterns, fierce confrontation, an...

Embodiment 2

[0049] In this embodiment, on the basis of Embodiment 1, the "four-domain characteristics" evaluation indicators corresponding to the characteristics of the four-domain representation include time occupancy, space coverage, spectrum occupancy, and energy domain average power spectral density. The following are respectively given The definitions of these four indicators and the expressions of the indicators are further explained.

[0050] 1) Time occupancy indicator modeling

[0051] Time occupancy can be defined as the and frequency range Within, the ratio of the length of time taken by the average value of the power density spectrum of the electromagnetic environment to exceed the specified electromagnetic environment threshold to the combat time period. Its expression is:

[0052]

[0053] Substituting the time-domain characteristic function expression into the above formula, it can be simplified as:

[0054]

[0055] In the formula: U is the unit step function, ...

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Abstract

The invention discloses an electromagnetic environment complexity assessment method based on time-frequency space-energy modulation domain analysis. The method comprises the following steps: S1, performing index assessment on electromagnetic environment complexity through power density, signal duration of a complex electromagnetic environment, frequency coverage, space coverage, signal density and signal pattern; S2, completing characterization model modeling of the electromagnetic environment in four latitudes of time domain feature, space domain feature, frequency domain feature and energy domain feature through the evaluation indexes generated in the step S1; S3, respectively and correspondingly establishing a time occupancy index, an airspace coverage rate index, a frequency spectrum occupancy index and an energy domain average power density spectrum index according to the modeled time domain feature model, the modeled airspace feature model, the modeled frequency domain feature model and the modeled energy domain feature model, and analyzing occupancy rates of a time domain, an airspace and a frequency domain; and S4, performing numerical index quantification on the electromagnetic environment complexity through a complexity evaluation formula, and establishing an electromagnetic environment complexity grade according to a quantitative index.

Description

technical field [0001] The invention relates to an electromagnetic environment complexity evaluation method, in particular to an electromagnetic environment complexity evaluation method based on time-frequency-space energy modulation domain analysis. Background technique [0002] The electromagnetic environment is the sum of all electromagnetic phenomena present in a given location. With the information age, electronic technology and electronic warfare equipment are widely used, any civil and military operations are in a certain electromagnetic environment, and its role is as important as traditional environmental elements such as terrain, meteorology, and hydrology, and it is becoming more and more prominent. The electromagnetic environment is an invisible environment, and it presents the characteristics of dynamic diversity; especially the increasingly fierce electromagnetic countermeasures of the hostile sides, which intensifies the complexity of the electromagnetic envir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R29/08
CPCG01R31/001G01R29/0892
Inventor 孙成刚岳红霞张剑锋潘宝凤谢勇蒋伟唐庆生
Owner 成都众享天地网络科技有限公司
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