Efficiency evaluation of unmanned aerial vehicle in complex electromagnetic environment

Yanwei, 焦彦维 Jiao; Deting, 侯德亭 Hou; Dongfang, 周东方 Zhou; Tao, 胡涛 Hu; Jingyu, 林竞羽 Lin; Zhanqi, 王占琪 Wang

doi:10.3788/hplpb20142607.73201

Cited by 3 publications

(2 citation statements)

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“…EMI will cause the non-linear distortion of airborne receivers, which will lead to the interruption of data link communication and seriously threaten the battlefield survival of UAVs. Jiao Yanwei [17] used cloud model method to study the comprehensive effectiveness of UAV in complex electromagnetic environment, and established the effectiveness evaluation index system of hierarchical structure of UAV in complex electromagnetic environment. Liu Ruiqi et al [18] deduced the inequality of tracking interference hyperboloid and limited power interference range from the time domain and power condition of tracking interference, determined the effective interference range under different parameters, and proposed a reasonable jamming start-up strategy.…”

Section: Research On Emi and Its Mechanism In Data Linkmentioning

confidence: 99%

Progress of Electromagnetic Compatibility Design for Unmanned Aerial Vehicles

2020

MATEC Web Conf.

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Section: Research On Emi and Its Mechanism In Data Linkmentioning

confidence: 99%

Progress of Electromagnetic Compatibility Design for Unmanned Aerial Vehicles

2020

MATEC Web Conf.

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“…Huang Wenjun [17] proposed a new anti-jamming technology for UAV data link. Jiao Yanwei [18] used cloud model method to study the comprehensive effectiveness of UAV in complex electromagnetic environment, and established the effectiveness evaluation index system of hierarchical structure of UAV in complex electromagnetic environment. Liu Ruiqi et al [19] deduced the inequality of tracking interference hyperboloid and limited power interference range from the time domain and power condition of tracking interference, determined the effective interference range under different parameters, and proposed a reasonable jamming start-up strategy.…”

Section: Numerical Simulation Of Emi Of Uavmentioning

confidence: 99%

Progress of Electromagnetic Compatibility Design for Unmanned Aerial Vehicles

Wu¹,

Ma²

2019

dtetr

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The electromagnetic environment of UAV system was studied, and three key elements of electromagnetic interference (EMI) are analyzed. The research status of electromagnetic characteristics of UAV system at home and abroad was summarized from numerical simulation of EMI, experimental test of EMI and design of electromagnetic compatibility (EMC). The main contents include the research on electromagnetic characteristics of airborne antenna, EMI of data link and its mechanism, electromagnetic characteristics of internal cables, electromagnetic radiation test, electromagnetic conduction test, system-level EMC design, etc. The key technical challenges faced by the research on EMC of unmanned aerial vehicles at home and abroad are pointed out. Research on Electromagnetic EnvironmentWhen UAV is flying, it is not only affected by electromagnetic environment caused by radiation of internal equipment, but also by external electromagnetic environment such as lightning, interference station, nuclear electromagnetic pulse and so on. The radio frequency radiation overlaps in space, time, frequency and energy with the different working environment of UAV. If these interference cannot be prevented reasonably, the performance of airborne equipment will be greatly affected [1,2]. These EMI will not only interfere with the normal work of the UAV electronic system, but also destroy the key components of the electronic equipment, resulting in the failure of the instrumentation or control system, which directly threatens flight safety.Electromagnetic environment refers to the sum of power or field interference in different frequency range and the kinds and states of various interference sources when the UAV is performing its mission [3]. The external electromagnetic environment of UAV can be divided into natural electromagnetic environment and man-made electromagnetic environment. Natural electromagnetic environment exists objectively, including lightning, static electricity and earth electromagnetic field; human-made electromagnetic environment is formed by human activities, including electromagnetic wave emission, receiving activities caused by wireless communication and additional electromagnetic fields generated by these activities. The internal electromagnetic environment of UAV mainly includes antenna feed system, electromechanical system and circuit system.

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Application of the Cloud Model Synthesis Method in Ecological Evaluation of Waterways

Chen

Wang

Zhu

et al. 2022

Mathematical Problems in Engineering

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The cloud model synthesis method based on the membership cloud theory combines the fuzziness and randomness of uncertain problems in reality and is a model that can realize the transformation between qualitative concepts and quantitative data compared with the traditional fuzzy theory system. The theory and method are relatively lacking in the research work of waterway ecological evaluation. In view of the abovementioned characteristics and the advantages of wide applications of the membership cloud model, this paper takes the ecological evaluation of the Jingjiang River waterway as an example and applies the cloud model synthesis method to the comprehensive evaluation of waterway ecology. The cloud generator MATLAB code is used as a tool to combine the expert scoring data of the Jingjiang ecological waterway comprehensive evaluation system, and the clouding principle of human scoring variables is applied to conduct a comprehensive evaluation of the ecological nature of the Jingjiang waterway from 2011 to 2015. The results show that the cloud model synthesis method is applicable to the ecological evaluation of waterways and has the advantages of being applicable to subjective and objective data as well as retaining the uncertainty of each element in the evaluation system in the calculation process. This research can play a supplementary and perfect role for the method of waterway ecological evaluation.

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Efficiency evaluation of unmanned aerial vehicle in complex electromagnetic environment

Cited by 3 publications

References 0 publications

Progress of Electromagnetic Compatibility Design for Unmanned Aerial Vehicles

Progress of Electromagnetic Compatibility Design for Unmanned Aerial Vehicles

Progress of Electromagnetic Compatibility Design for Unmanned Aerial Vehicles

Application of the Cloud Model Synthesis Method in Ecological Evaluation of Waterways

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