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Cluster unmanned aerial vehicle beyond-visual-range detection method based on space plasma cloud

A detection method, plasma technology, applied in the field of over-the-horizon detection of cluster drones, which can solve the problems of long-term early warning capabilities, detection range limitations, and limited early warning time for low-observable targets

Active Publication Date: 2021-09-10
中国电波传播研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the existence of the curvature of the earth, the detection range of conventional line-of-sight radars is greatly limited. Generally, they only have line-of-sight detection capabilities, and can only realize the detection and early warning of air targets such as aircraft or sea ships within the direct line-of-sight range of electromagnetic waves. The early warning time is limited; moreover, due to the target shape design and wave-absorbing coating, radars usually working in the 1-20GHz frequency band do not have anti-stealth capabilities, which greatly affects the long-term early warning capabilities of low-observable targets

Method used

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  • Cluster unmanned aerial vehicle beyond-visual-range detection method based on space plasma cloud
  • Cluster unmanned aerial vehicle beyond-visual-range detection method based on space plasma cloud
  • Cluster unmanned aerial vehicle beyond-visual-range detection method based on space plasma cloud

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Embodiment 1

[0039] Example 1, such as figure 1 As shown, this embodiment discloses a method for over-the-horizon detection of cluster drones based on space plasma clouds, including the following steps:

[0040] Step 1, space plasma cloud generation and space-time evolution modeling, specifically including space plasma cloud generation method, space plasma cloud diffusion process and space plasma cloud space-time evolution modeling and simulation.

[0041] The release substances such as alkali metals and alkaline earth metals are preferred. Such metal substances have very active chemical properties and can be easily photoionized under light conditions to generate plasma clouds. The photoionization rate is related to the frequency of sunlight and the intensity of solar radiation. Cesium Cs vapor is released under light conditions, and photoionized in the ionosphere to generate plasma clouds. The photoionization equation is as follows:

[0042] Cs+hv→Cs + +e - (1)

[0043] The photoion...

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Abstract

The invention discloses a cluster unmanned aerial vehicle beyond-visual-range detection method based on space plasma cloud. The method comprises the following steps: 1, space plasma cloud generation and time-space evolution modeling; 2, space plasma cloud over-the-horizon detection two-way propagation calculation; 3, radar echo signal detection and multi-mode clutter suppression; and 4, cluster unmanned aerial vehicle target identification. The cluster unmanned aerial vehicle beyond-visual-range detection method based on space plasma cloud realizes beyond-visual-range detection and resolution of a cluster unmanned aerial vehicle by using the space plasma cloud as a reflector.

Description

technical field [0001] The invention belongs to the technical field of over-the-horizon detection of clustered unmanned aerial vehicles, and in particular relates to an over-the-horizon and anti-stealth detection method for clustered unmanned aerial vehicles based on space plasma cloud reflection in this field. Background technique [0002] The detection and early warning radar emits electromagnetic wave signals of a specific frequency, and analyzes key information such as the speed, position, scale, and quantity of the target by receiving the scattered echo signal of the target in the electromagnetic irradiation area, thereby realizing early warning. However, due to the existence of the curvature of the earth, the detection range of conventional line-of-sight radars is greatly limited. Generally, they only have line-of-sight detection capabilities, and can only realize the detection and early warning of air targets such as aircraft or sea ships within the direct line-of-sigh...

Claims

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Application Information

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IPC IPC(8): G01S13/88
CPCG01S13/887Y02A90/10
Inventor 赵海生许正文吴健薛昆谢守志郑延帅徐朝辉高敬帆王耀武
Owner 中国电波传播研究所
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