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Aiming at the problem of low accuracy of the target for one UAV(Unmanned Aerial Vehicle), according to the UAV’s characteristics of UAV aerial images, POS dates and satellite digital map, a UAV image matching and targeting method is presented based on POS. At first, using the Gaussian pyramid optical...

A terpolymer resin (NSMA) was synthesized with styrene, maleic anhydride and N-phenyl maleimide. The structure and composition was characterized with FT-IR and 13C-NMR. The thermal resistance of NSMA was determined through integrated thermal analysis. The results indicated that, when the molar ratio...

This study proposes a detachable quadcopter UAV delivery system to overcome traditional UAV limitations like inflexible cargo handling and high costs. The modular design features an X-shaped carbon fiber frame with hollow arms (12mm outer, 8mm inner diameter), offering 60% greater bending resistance...

Unmanned Aerial Vehicles (UAVs) have emerged as a critical technological component with widespread applications in military reconnaissance, civil logistics, medical delivery, and environmental monitoring, with technological advancements fundamentally dependent on continuous innovations in structural...

According to the optimization problem in a variety of corrective and improvement actions that exist in the FMECA method, this paper introduces the fuzzy theory of FMECA analysis, study quantitative method of the degree of severity S , occurrence probability O and detestability D of RPN algorithm, and...

UAV technology has realized rapid development in recent years, especially in foldable UAVs. The foldable UAV has numerous advantages, such as portability, compact storage, and easy to carry. This paper focuses on the structural optimization design of foldable UAV, aiming to improve its performance in...

With the popularization of UAV technology in the civil field, UAV application technology specialty came into being. The formation time of UAV application technology specialty is similar to that of 1 + X certificate system. Therefore, it is of practical significance to discuss the construction of UAV...

With the rapid development of artificial intelligence, its application effect in the field of UAV path planning is becoming more and more significant. It plays a great role in path search optimization, environment perception modelling, dynamic environment adaptation, and multi-UAV collaboration. Reinforcement...

Restricted communication in unmanned aerial vehicle (UAV) swarms means that configuration needs to vary dynamically with changing tasks. We propose a mission planning model that uses a motif, a grouping of related functions, as the basic task unit. The planning model automatically generates a mission...

Camera calibration is the first step of positioning using binocular vision. Owning to the approximation capability of the neural network, a complex mathematical model needed by traditional calibration methods can be avoided. However the general neural network methods have their drawbacks to reduce its...

Compared with traditional internal-combustion engine powered UAVs, electric UAVs have no emission of pollutants and low acoustic signal. So they are more suitable for military or civil missions involving intelligence, surveillance, or reconnaissance (ISR). This paper builds two electric propulsion systems...

Photovoltaic (PV) power generation has been widely promoted due to the increased demand for clean energy in recent years, but the fires it generates are often prone to cause large negative impacts. Therefore, a machine vision-based fire recognition algorithm for PV panel fire-fighting UAVs is proposed...

According to the demand of optimization design of UAV communication system, this article proposes a method of calculating the link loss of UAV data chain by studying the channel characteristics of UAV data link; establishes the path loss of UAV channel of UAV Model; analyzes the influence of frequency,...

The trajectory tracking control of a quad-rotor UAV is discussed in this paper. Firstly, establish the system model by the Eula-Lagrange method. Decompound the system as the position and attitude subsystem, respectively. The backstepping approach based calculation method is proposed to obtain the expected...

The introduction of crew resource management idea to optimize the aviation system resources to UAV system, improve the overall ability, and ultimately achieve rapid, accurate, efficient objective. Based on researching the connotation on crew resource management, puts forward the concept of UAV system...

The flight performance of four-rotor unmanned helicopter depends largely on the flight control system, the flight control system was mainly consisted of attitude algorithm and controller. During design time, firstly, in order to real-time update for the quaternion , we fused the data of gyroscope accelerometer...

The paper assume a new scheme for UAV TT&C and information transmission system, according to the function and performance requirement of UAV TT&C and information transmission system and the characteristic of ground-air wireless channel of UAV system, and combing with the key technologies of wireless...

Helicopter-based LiDAR system due to high input cost and personal risk resulting in a certain restrictions on overhead power lines. With the developed application of UAV platform for power lines surveys and miniaturization of LiDAR device, the integration of UAV-based LiDAR system comes to maturity and...

The Mesozoic sequence framework of the eastern Yihezhuang salient in Jiyang depression, which was a residual basin, was studied in order to improve the success rate of locating hydrocarbon reservoirs. First, through seismic profiles, well logs and cores, complemented with outcrops, totally 5 sequence...

order to improve the reliability of aviation electronic sub-system in UAV, the analysis method based on Failure Mode and Effects Analysis (FMEA) is put forward. The risk factors and correction measurement feasibility parameters are quantified with fuzzy theory. Then the fault modes with higher risk priority...

Fast and accurate visual tracking of ground buildings can provide unmanned aerial vehicles (UAVs) with rich perceptual information, which is very important for target recognition, navigation and system control. However, when an UAV moves fast, both background and buildings in visual scenes change relatively...

This paper makes quantitative statistics on the naming patterns of Peking and Guang-style pastries and analyzes the similarities and differences between the naming patterns of Peking and Guang-style pastries from the perspective of prototype and interaction in cognitive semantics. Based on the “Event-domain...

This paper deals with the Unmanned Aerial Vehicle (UAV) Routing and Scheduling problem applied in logistics, with the implementation of Dynamic Mixed Integer Linear Programming (MILP) to tackle the problem. The MILP accounts for multiply constraints and objectives based on the demand of practicality...

Urban last-mile delivery faces increasing traffic congestion and growing consumer demand for speed and efficiency. This paper analyzes Unmanned Aerial Vehicles (UAVs) as an opportunity for improving delivery. Using case studies from JD.com and SF Express, and Amazon the analysis demonstrates how UAVs...

Aiming at the special circumstance in which UAVs swarm are used in the mode of battlefield extending, a message delivery scheme called AWJPMMD (ARIMA-WNN Joint Prediction Model based Message Delivery) is proposed. In this scheme, the LET (Link Expiration Time) of the center node and the proxy node is...

This paper presents a virtual structures in multi-UAVs formation flight via consensus strategies. By using consensus strategies, each UAV can track coordination vector, the desired formation shape can be preserved accurately. For the multi-UAVs control problem, applying a novel base-on outdated and predicted...

Based on results of biomass combustion and pyrolysis using TG-DSC analyzer, biomass thermodynamics characteristics were studied. Integrated heat model and differential heat model were used to determined biomass thermal behavior, and the former fitted the actual better; the heat capacities with temperature...

In the research of route planning, better balance between planning time and route quality should be achieved to reduce UAVs cost. This article is based on basic RRT (Rapidly-exploring Random Trees) and proposes an improved RRT_Connect algorithm which improves the way generating new node of the tree,...

There are various factors affecting drying shrinkage of cement-based material, including use quantity of cement and auxiliary cementitious material, water cement ratio, maintenance system and drying condition, and in addition, total quantity of coarse and fine aggregate, matching and category also affect...

As an excellent tear agent of the second generation, CS has been widely used in the police department of many countries. CS disperses the crowd depending on the aerosol in the air due to combustion and explosion. And at the same time, CS decomposes into a variety of products. With the use of TG/DSC-FITR...

RTK real-time dynamic relative positioning is to be able to get cm-level real-time positioning accuracy in the field of measuring methods, it USES the Real-time kinematic, RTK method, is a major milestone in GPS application, it appeared as the project lofting, topographic mapping, brought new dawn various...

Navigation technology development is one of the core key technologies to promote the intelligent development of UAVs, and is an important technical guarantee to support the complex mission attempt of UAVs and their formations. This paper introduces the main navigation means and application scenarios...

The Ni-Co/HZSM-5 methane dehydroaromatization (DHA) catalyst was prepared using wet impregnation. The catalysts were characterized by XRD, TEM, TG-DSC, FT-IR and XPS techniques before and after reaction. The results show that the maximum conversion rate of methane DHA at 580 reached 39.8%. The carbon-silicon-oxygen...

The traditional aero model DC(direct current) motor is commutated mechanically by brush and commutator, however, there is mechanical friction between the brush and commutator, which will cause noise, sparks, electromagnetic interference and many other problems. Because of the disadvantages of high manufacturing...

Quad-rotor UAV wind resistance problem persists in its flight, the wind disturbance in UAV attitude control stability of the effect. In this paper, quad-rotor UAV wind modeling and simulation performance issues, the first of building four-rotor UAV model; and then were in no wind, the posture angle control...

In recent years, because of its powerful that quad-rotor UAV maneuverability and stability exhibited in civilian and military aspects of great potential, but because of its endurance and power efficiency, it has become a major factor inhibiting the development of UAV applications. In this paper, the...

Unmanned Aerial Vehicles (UAVs) are extensively utilized in both civilian and military sectors; yet, conventional UAV control algorithms encounter efficiency limitations in complicated situations. This research proposes a BCI-based UAV control system to enhance UAV control efficiency. This design system...

With the development of UAV technology and low-altitude economy, path planning is an important link for UAVs to perform tasks in urban mission space. In urban environments, UAVs face many challenges, such as complex building layouts, large amounts of green belts and so on. RRT (rapidly exploring random...

A novel big data-driven Prognostic and Health Management (PHM) method of Unmanned Air Vehicles (UAV) based on IoT was proposed. The method innovatively using big data of IoT analysis with health states to build the reference indicator, through probability-based techniques, and produced a degradation...

In view of the low efficiency and inspecting dead zone of inspecting in 500kV substation, a new inspection method is proposed, which is using UAV carrying multi-sensor detection devices instead of traditional manual inspection and robot inspection. The structure, the composition of obstacle avoidance...

This study adapts a nonlinear dynamic predictive model for quadrotor UAV trajectory tracking; which involves translational and rotational motions, the gravitational contribution and gyroscopic impact. In this implementation, Initially construct the mathematical model of UAV dynamics, then derive the...

Nowadays, when it comes to aerial photography drones, consumers think of DJI at the first time. Among consumers, DJI seems to be equated with drones. But DJI is a young company which established in the 2006. This paper conducts a strategic analysis of the macro environment in the initial development...

High-strength bolt loosening detection is an important part of steel bridge inspection. The automatic detection methods based on machine vision and UAV have the characteristics of fast speed and high efficiency, and have been widely used to replace manual inspection. However, it is difficult to realize...

The addition of nano-SiO₂ to 20% silane coupling agent is carried out using anhydrous ethanol as the solvent in the presence of acetic acid. The styrene-butadiene-styrene (SBS) is added with 1% dicumyl peroxide crosslinking agent by adding 5% maleic anhydride grafted polyethylene to be modified on an...

Silver doped TiO2 catalyst TiO2-Ag was synthesized by microwave hydrothermal method when the optimal condition was selected with orthogonal and single factor tests. The photocatalytic activity of TiO2-Ag catalyst was further enhanced by the microwave and ultrasonic assisted with using methyl orange as...

This paper discusses the dynamic multi-agent system is scattered by the configuration of many autonomous or semi-autonomous subsystem (agent) through the information network which is formed by the interconnection system. Individuals with relatively equal status in the system and each other for information...

In the unmanned aerial vehicle control system design, the controller design is the base of improving the control stability performance, considering the nonlinear and uncertain properties of the model, the beam space weighted spectral peak searching method is used to estimate the unknown parameters of...

UAVs often need to perform tasks in low-level complex environments. In order to protect the safety of UAVs, it is necessary to avoid radar and to avoid early warning and obstruction. In this paper, the obstacle avoidance radar of UAV is analyzed deeply, and a stable, low cost and miniaturized LFM broadband...

The article discusses the need to increase agricultural production in connection with the growth of the world's population. One of the ways to accelerate the development of agricultural production is the extensive commissioning of unused agricultural land. A project has been approved in Penza region...

DTA/SDTG and DSC techniques were used to study the thermal behaviors of citronellol- -D-glucopyranoside (CGLY) . The heating rate was 5, 7.5, 10, and 12.5 K min-1, the samples were heated from 30oC to 500oC. Methods of Friedman and Flynn-Wall-Ozawa were applied to calculate the parameters of thermal...