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World Journal of Emergency Medicine 2023年第4期14卷 273-279页

作者： Jiafa Lu Xin Wang Linghao Chen Xuedong Sun Rui Li Wanjing Zhong Yajing Fu Le Yang Weixiang Liu Wei Han Emergency Department of Shenzhen University General Hospital Shenzhen 518055China Shenzhen Institute of Advanced Technology Chinese Academy of SciencesShenzhen 518055China School of Biomedical Engineering Health Science CenterShenzhen UniversityShenzhen 518060China Tianjin University Tianjin 300072China

BACKGROUND:Rapid on-site triage is critical after mass-casualty incidents(MCIs)and other mass injury *** aerial vehicles(UAVs)have been used in MCIs to search and rescue wounded individuals,but they mainly depend on the UAV operator’s *** used UAVs and artificial intelligence(AI)to provide a new technique for the triage of MCIs and more efficient solutions for emergency ***:This was a preliminary experimental *** developed an intelligent triage system based on two AI algorithms,namely OpenPose and *** were recruited to simulate the MCI scene and triage,combined with UAV and Fifth Generation(5G)Mobile Communication Technology real-time transmission technique,to achieve triage in the simulated MCI ***:Seven postures were designed and recognized to achieve brief but meaningful triage in *** volunteers participated in the MCI simulation *** results of simulation scenarios showed that the proposed method was feasible in tasks of triage for ***:The proposed technique may provide an alternative technique for the triage of MCIs and is an innovative method in emergency rescue.

关键词： Mass-casualty incidents Emergency medical service unmanned aerial vehicle Fifth Generation Mobile Communication Technology Artificial intelligence

Timeliness optimization of unmanned aerial vehicle lossy communications for internet-of-things

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Chinese Journal of Aeronautics 2023年第6期36卷 249-255页

作者： Wensheng LIN Lixin LI Yun LIU Yixuan HE Ying LIU School of Electronics and Information Northwestern Polytechnical UniversityXi'an 710129China Southwest China Institute of Electronic Technology Chengdu 610036China Xi'an Modern Control Technology Research Institute Xi'an 710065China Shanghai Institute of Satellite Engineering Shanghai 201109China

Information freshness is a key factor for Internet-of-Things(IoT)to make appropriate decisions and *** paper proposes an analytical framework for evaluating the timeliness performance of the IoT system based on unmanned aerial vehicle(UAV)lossy *** performance analysis consists of the outage probability analysis and the Age-of-Information(AoI)analysis with *** begin with,we solve a lossy coding problem formulated from the UAV communication system,and derive a closed-form expression of the outage probability based on Shannon's lossy source-channel separation ***,we characterize the Peak AoI(PAoI)for the considered system,and further minimize the PAoI by deriving the optimal rate for generating ***,we analyze the system performance through theoretical calculations and *** results indicate that the optimal server utilization ratio is always no larger than *** practical applications,we can utilize the proposed analytical framework to determine the system parameters which guarantee the timeliness performance of UAV lossy communications.

关键词： Age-of-Information Information freshness Lossy communications unmanned aerial vehicle Outage probability

Coati Optimization-Based Energy Efficient Routing Protocol for unmanned aerial vehicle Communication

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Computers, Materials & Continua 2023年第6期75卷 4805-4820页

作者： Hanan Abdullah Mengash Hamed Alqahtani Mohammed Maray Mohamed K.Nour Radwa Marzouk Mohammed Abdullah Al-Hagery Heba Mohsen Mesfer Al Duhayyim Department of Information Systems College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Information Systems College of Computer ScienceCenter of Artificial Intelligence and Unit of CybersecurityKing Khalid UniversityAbha62529Saudi Arabia Department of Information Systems College of Computer ScienceKing Khalid UniversityAbha62529Saudi Arabia Department of Computer Sciences College of Computing and Information SystemsUmm Al-Qura UniversityMecca24382Saudi Arabia Department of Computer Science College of ComputerQassim UniversityBuraydah52571Saudi Arabia Department of Computer Science Faculty of Computers and Information TechnologyFuture University in EgyptNew Cairo11835Egypt Department of Computer Science College of Sciences and Humanities-AflajPrince Sattam bin Abdulaziz UniversityAl-Kharj16278Saudi Arabia

With the flexible deployment and high mobility of unmanned aerial vehicles(UAVs)in an open environment,they have generated con-siderable attention in military and civil applications intending to enable ubiquitous connectivity and foster agile *** difficulty stems from features other than mobile ad-hoc network(MANET),namely aerial mobility in three-dimensional space and often changing *** the UAV network,a single node serves as a forwarding,transmitting,and receiving node at the same ***,the communication path is multi-hop,and routing significantly affects the network’s performance.A lot of effort should be invested in performance analysis for selecting the optimum routing *** this motivation,this study modelled a new Coati Optimization Algorithm-based Energy-Efficient Routing Process for unmanned aerial vehicle Communication(COAER-UAVC)*** presented COAER-UAVC technique establishes effective routes for communication between the *** is primarily based on the coati characteristics in nature:if attacking and hunting iguanas and escaping from ***,the presented COAER-UAVC technique concentrates on the design of fitness functions to minimize energy utilization and communication delay.A varied group of simulations was performed to depict the optimum performance of the COAER-UAVC *** experimental results verified that the COAER-UAVC technique had assured improved performance over other approaches.

关键词： Artificial intelligence unmanned aerial vehicle data communication routing protocol energy efficiency

Estimation of chlorophyll content in Brassica napus based on unmanned aerial vehicle images

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Oil Crop Science 2022年第3期7卷 149-155页

作者： Yayi Huang Qiming Ma Xiaoming Wu Hao Li Kun Xu Gaoxiang Ji Fang Qian Lixia Li Qian Huang Ying Long Xiaojun Zhang Biyun Chen Changhua Liu School of Mathematics and Computer Science Wuhan Polytechnic UniversityWuhan430023China Oil Crops Research Institute Chinese Academy of Agricultural SciencesKey Laboratory of Oil Crop Biology and Genetic ImprovementMinistry of Agriculture and Rural AffairsWuhan430062China

The chlorophyll content has a direct effect on photosynthesis of *** order to explore a quick and convenient method for estimating the chlorophyll content of Brassica napus and facilitate efficient crop monitoring,we measured the actual value of chlorophyll with a SPAD-502 chlorophyll detector,and collected aerial images of *** with an unmanned aerial vehicle(UAV)carrying a RGB camera in this *** total number of 270samples collected images were divided into regions according to the planting conditions of different *** varieties in the ***,according to the empirical formula,there were 36 colors’characteristic parameters calculated and *** estimate the chlorophyll content of rape,189 samples were included in the modeling set,while the other 81 samples were enrolled in the validation set for testing the accuracy of this *** the combination of R(red),G(green)and B(blue)color channels,the results showed that the color characteristics B/(R+G),b,B/G,(G-B)/(G+B),g-b were highly connected with the measured value of chlorophyll SPAD,and the correlation coefficient between the combination based on B/(R+G)and SPAD value was *** R2=0.805,RMSE=3.343,and RE=6.84%,the regression model created using random forest had superior outcomes,according to the model *** study offers a new method for quickly estimating the amount of chlorophyll in rapeseed and a workable reference for crop monitoring using the UAV platform.

关键词： Brassica napus unmanned aerial vehicle Red green blue images SPAD Chlorophyll

Certificateless designated verifier proxy signature scheme for unmanned aerial vehicle networks

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Science China(Information Sciences) 2021年第1期64卷 79-93页

作者： Lei HE Jianfeng MA Limin SHEN Dawei WEI School of Computer Science and Technology Xidian University School of Computer and Communication Engineering Zhengzhou University of Light Industry School of Cyber Engineering Xidian University School of Computer Science and Technology Nanjing Normal University

unmanned aerial vehicle(UAV) technologies have a promising application prospect. It is necessary to use digital signature schemes to protect the integrity and authentication of messages in the UAV networks. According to the characteristics of UAV networks, digital signature schemes should solve the problems of digital certificate management and key escrow, guarantee the real-time performance of UAV executing commands, and ensure that only the designated verifier can verify the signature. Therefore, we proposed a certificateless designated verifier proxy signature(CLDVPS) scheme which meets the requirements. We proved our signature scheme is existentially unforgeable under an adaptive chosen message attack in the random oracle model and compared the efficiency of our signature scheme with other signature *** implemented these signature schemes in jPBC to obtain the computing time and theoretically analyzed signature length of these signature schemes. The analysis results indicate that our CLDVPS scheme is more efficient than most of other related signature schemes on computation costs and also efficient on communication costs.

关键词： certificateless designated verifier proxy digital signature unmanned aerial vehicle

General optimal design of solar-powered unmanned aerial vehicle for priority considering propulsion system

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Chinese Journal of Aeronautics 2020年第8期33卷 2176-2188页

作者： Xinhua LI Kaijun SUN Feng LI School of Aeronautic Science and Engineering Beihang UniversityBeijing 100083China CH UAV Technology Co. LtdChina Academy of Aerospace AerodynamicsBeijing 100()74China

This paper describes the general optimization design method of Solar-Powered unmanned aerial vehicle which priority considering propulsion system planning. Based on the traditional solar powered aircraft design method, the propulsion system top-level target parameters which affect the path planning are integrated into the general optimization design. According to the typical mission requirements of Solar-Powered unmanned aerial vehicle, considering the design variables such as wing area, aspect ratio, design mission date and so on, the general optimization is carried out with the minimum aircraft weight as the optimization objective. The influence of wing area and aspect ratio on the optimal design results is analyzed and compared with the traditional design method. The results show that the general design method of Solar-Powered unmanned aerial vehicle for priority considering propulsion system can greatly reduce the electricity demand of energy storage battery, greatly reduce the aircraft weight of Solar-Powered unmanned aerial vehicle.

关键词： Aircraft design optimization General design technology Route analysis Solar-powered unmanned aerial vehicle

An improved adaptive differential evolution algorithm for single unmanned aerial vehicle multitasking

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Defence Technology（防务技术） 2021年第6期17卷 1967-1975页

作者： Jian-li Su Hua Wang School of Astronautics Beihang UniversityBeijing100191China

Single unmanned aerial vehicle(UAV)multitasking plays an important role in multiple UAVs cooperative control,which is as well as the most complicated and hardest *** paper establishes a threedimensional topographical map,and an improved adaptive differential evolution(IADE)algorithm is proposed for single UAV *** an optimized problem,the efficiency of using standard differential evolution to obtain the global optimal solution is very low to avoid this ***,the algorithm adopts the mutation factor and crossover factor into dynamic adaptive functions,which makes the crossover factor and variation factor can be adjusted with the number of population iteration and individual fitness value,letting the algorithm exploration and development more *** experimental results implicate that the IADE algorithm has better performance,higher convergence and efficiency to solve the multitasking problem compared with other algorithms.

关键词： unmanned aerial vehicle Multitasking Adaptive differential evolution Mutation factor Crossover factor

Seamless integration of above-and undercanopy unmanned aerial vehicle laser scanning for forest investigation

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Forest Ecosystems 2021年第1期8卷 124-138页

作者： Yunsheng Wang Antero Kukko Eric Hyyppä Teemu Hakala Jiri Pyörälä Matti Lehtomäki Aimad El Issaoui Xiaowei Yu Harri Kaartinen Xinlian Liang Juha Hyyppä Department of Remote Sensing and Photogrammetry Finnish Geospatial Research Institute FGIThe National Land Survey of Finland02431 MasalaFinland Department of Forest Sciences University of HelsinkiFI-00014 HelsinkiFinland Department of Geography and Geology University of TurkuFI-20500 TurkuFinland

Background:Current automated forest investigation is facing a dilemma over how to achieve high tree-and plotlevel completeness while maintaining a high cost and labor *** study tackles the challenge by exploring a new concept that enables an efficient fusion of aerial and terrestrial perspectives for digitizing and characterizing individual trees in forests through an unmanned aerial vehicle(UAV)that flies above and under canopies in a single *** advantage of such concept is that the aerial perspective from the above-canopy UAV and the terrestrial perspective from the under-canopy UAV can be seamlessly integrated in one flight,thus grants the access to simultaneous high completeness,high efficiency,and low ***:In the experiment,an approximately 0.5 ha forest was covered in ca.10 min from takeoff to *** GNSS-IMU based positioning supports a geometric accuracy of the produced point cloud that is equivalent to that of the mobile mapping systems,which leads to a 2–4 cm RMSE of the diameter at the breast height estimates,and a 4–7 cm RMSE of the stem curve ***:Results of the experiment suggested that the integrated flight is capable of combining the high completeness of upper canopies from the above-canopy perspective and the high completeness of stems from the terrestrial ***,it is a solution to combine the advantages of the terrestrial static,the mobile,and the above-canopy UAV observations,which is a promising step forward to achieve a fully autonomous in situ forest *** studies should be aimed to further improve the platform positioning,and to automatize the UAV operation.

关键词： Forest In situ Inventory Above canopy Under canopy unmanned aerial vehicle Laser scanning Point cloud Close range remote sensing

Development and prospect of unmanned aerial vehicle technologies for agricultural production management

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International Journal of Agricultural and Biological Engineering 2013年第3期6卷 1-10页

作者： Yanbo Huang Steven J.Thomson W.Clint Hoffmann Yubin Lan Bradley K.Fritz United States Department of Agriculture Agricultural Research ServiceCrop Production Systems Research UnitStonevilleMS 38776USA United States Department of Agriculture Agricultural Research ServiceAreawide Pest Management Research UnitCollege StationTX 77845USA

unmanned aerial vehicles have been developed and applied to support agricultural production *** with piloted aircraft,an unmanned aerial vehicle(UAV)can focus on small crop fields at lower flight altitudes than regular aircraft to perform site-specific farm management with higher *** can also“fill in the gap”in locations where fixed winged or rotary winged aircraft are not readily *** agriculture,UAVs have primarily been developed and used for remote sensing and application of crop production and protection *** of fertilizers and chemicals is frequently needed at specific times and locations for site-specific *** monitoring of crop plant health is often required at very high resolution for accurate site-specific management as *** paper presents an overview of research involving the development of UAV technology for agricultural production ***,systems and methods are examined and *** limitations of current UAVs for agricultural production management are discussed,as well as future needs and suggestions for development and application of the UAV technologies in agricultural production management.

关键词： unmanned aerial vehicle aircraft aerial application technology sensor remote sensing precision agriculture agricultural aviation

Comparison of linear and nonlinear aerodynamic parameter estimation approaches for an unmanned aerial vehicle using unscented Kalman filter

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Journal of Beijing Institute of Technology 2011年第3期20卷 339-344页

作者：李蒙刘莉 S.M.VERES School of Aerospace Engineering Beijing Institute of Technology School of Engineering Sciences University of Southampton

Aerodynamic parameter estimation provides an effective way for aerospace system modeling using measured data from flight tests, especially for the purpose of developing elaborate simulation environments and designing control systems of unmanned aerial vehicle （UAV） with short design cycles and reduced cost. However, parameter identification of airplane dynamics by nonlinear mod- els is complicated because of the noisy and biased sensor measurements. Using linear models for system identification is an alternative way if the fidelity can be guaranteed, as control design procedures are better established in linear systems. This paper considers the application and comparison of linear as well as nonlinear aerodynamic parameter estimation approaches of an UAV using unscented Kalman filter （UKF）. It also highlights the degree of deterioration of the linear model in the UKF identification process. The results show that both the linear and nonlinear methodologies can accurately estimate the control system design. Furthermore, considering loss of accuracy to be negligible, the linear model can be employed for control design of the UAV as presented here.

关键词： unmanned aerial vehicle aerodynamic parameter estimation unscented Kalman filter