scholarly journals Power Control Algorithm Based on a Cooperative Game in User-Centric Unmanned Aerial Vehicle Group

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Yuexia Zhang ◽  
Pengfei Zhang
Keyword(s):  
Power Control ◽  
Unmanned Aerial Vehicle ◽  
Cooperative Game ◽  
Lagrange Function ◽  
Vehicle Group ◽  
Entire System ◽  
Communication Quality ◽  
Aerial Vehicle ◽  
User Centric

The quality of service (QoS) of a user in user-centric unmanned aerial vehicle group (UUAVG) is degraded by complex cochannel interference; hence, a cooperative game power control (CGPC) algorithm in UUAVG is proposed. The algorithm helps to establish a downlink power control model of the UUAVG, construct a product of the signal to interference noise ratio function of each user as a utility function of the cooperative game, and deduce the optimal power control scheme using the Lagrange function. This scheme reduces the interference of the service unmanned aerial vehicle (UAV) to edge users and improves the communication quality of all the users as well as the throughput of the entire system. Simulation results show that the average throughput of the CGPC algorithm improved by 10.32% compared with the traditional Stackelberg Game based Nonunified Pricing Power Control (SGNPPC) algorithm. This shows that the CGPC algorithm can effectively reduce the transmission power of the cooperative UAV and enhance the capacity of the entire system, ensuring communication quality.

scholarly journals User-Centric UAV Group Power Allocation Algorithm

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Yuexia Zhang ◽  
Pengfei Zhang
Keyword(s):  
Nash Equilibrium ◽  
Power Allocation ◽  
Unmanned Aerial Vehicle ◽  
Point Group ◽  
User Equipment ◽  
Vehicle Group ◽  
Transmit Power ◽  
Allocation Algorithm ◽  
Aerial Vehicle ◽  
User Centric

User-centric unmanned aerial vehicle group (UUAVG) organizes a dynamic user-centric access point group for each user, which can improve user service quality and throughput. However, in UUAVG, unmanned aerial vehicle user equipment (UUE) and device-to-device user equipment (DUE) using the same frequency will cause co-frequency interference and reduce system performance. In response to this problem, a power allocation algorithm of the two-level Stackelbreg game (PAOTLSG) is proposed. The algorithm builds a two-level Stackelberg game model based on UUE and DUE and uses power control coefficients and other parameters to control UAV adjust with the transmit power of DUE to achieve dynamic balance. The optimal transmit power of UAV and DUE is theoretically deduced to achieve the game Nash equilibrium and theoretically prove the existence and uniqueness of the Nash equilibrium solution. The simulation results show that compared with the pricing-based Stackelbreg game (PSG) algorithm, the PAOTLSG algorithm can effectively increase the throughput by 4.65%.

scholarly journals A Cauchy mutant pigeon-inspired optimization–based multi-unmanned aerial vehicle path planning method

2020 ◽  
Vol 53 (1-2) ◽  
pp. 83-92 ◽  
Author(s):  
Bo Hang Wang ◽  
Dao Bo Wang ◽  
Zain Anwar Ali
Keyword(s):  
Path Planning ◽  
Unmanned Aerial Vehicle ◽  
Optimization Algorithm ◽  
Vehicle Group ◽  
Flight Duration ◽  
Planning Strategy ◽  
Optimum Position ◽  
Cauchy Mutation ◽  
Aerial Vehicle ◽  
Vehicle Path

To improve the performance of multi-unmanned aerial vehicle path planning in plateau narrow area, a control strategy based on Cauchy mutant pigeon-inspired optimization algorithm is proposed in this article. The Cauchy mutation operator is chosen to improve the pigeon-inspired optimization algorithm by comparing and analyzing the changing trend of fitness function of the local optimum position and the global optimum position when dealing with unmanned aerial vehicle path planning problems. The plateau topography model and plateau wind field model are established. Furthermore, a variety of control constrains of unmanned aerial vehicles are summarized and modeled. By combining with relative positions and total flight duration, a cooperative path planning strategy for unmanned aerial vehicle group is put forward. Finally, the simulation results show that the proposed Cauchy mutant pigeon-inspired optimization method gives better robustness and cooperative path planning strategy which are effective and advanced as compared with traditional pigeon-inspired optimization algorithm.

scholarly journals Active stabilization of unmanned aerial vehicle imaging platform

2020 ◽  
Vol 26 (19-20) ◽  
pp. 1791-1803 ◽  
Author(s):  
Mohit Verma ◽  
Vicente Lafarga ◽  
Mael Baron ◽  
Christophe Collette
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Unmanned Aerial Vehicle ◽  
Vibration Isolation ◽  
Isolation System ◽  
Aerial Vehicles ◽  
Active Stabilization ◽  
Aerial Vehicle ◽  
Active Vibration ◽  
Improved Performance

The advancement in technology has seen a rapid increase in the use of unmanned aerial vehicles for various applications. These unmanned aerial vehicles are often equipped with the imaging platform like a camera. During the unmanned aerial vehicle flight, the camera is subjected to vibrations which hamper the quality of the captured images/videos. The high-frequency vibrations from the unmanned aerial vehicle are transmitted to the camera. Conventionally, passive rubber mounts are used to isolate the camera from the drone vibrations. The passive mounts are able to provide reduction in response near the resonance. However, this comes at the cost of amplification of response at the higher frequency. This article proposes an active vibration isolation system which exhibits improved performance at the higher frequencies than the conventional system. The active isolation system consists of a contact-less voice coil actuator supported by four springs. Experiments are carried out to study the effect of vibrations on the quality of images captured. The characterization of drone vibrations is also carried out by recording the acceleration during different flight modes. The performance of the proposed isolation system is experimentally validated on a real drone camera subjected to the recorded drone acceleration spectrum. The isolation system is found to perform better than the conventional rubber mounts and is able to reduce the vibrations to a factor of one-fourth. It can be effectively used to improve the image acquisition quality of the unmanned aerial vehicles.

scholarly journals Utilization of Unmanned Aerial Vehicle, Artificial Intelligence, and Remote Measurement Technology for Bridge Inspections

2020 ◽  
Vol 32 (6) ◽  
pp. 1244-1258
Author(s):  
Pang-jo Chun ◽  
Ji Dang ◽  
Shunsuke Hamasaki ◽  
Ryosuke Yajima ◽  
Toshihiro Kameda ◽  
...  
Keyword(s):  
Artificial Intelligence ◽  
Unmanned Aerial Vehicle ◽  
Measurement Technology ◽  
Remote Measurement ◽  
Bridge Inspection ◽  
Current State ◽  
Bridge Collapse ◽  
Bridge Inspections ◽  
Aerial Vehicle

In recent years, aging of bridges has become a growing concern, and the danger of bridge collapse is increasing. To appropriately maintain bridges, it is necessary to perform inspections to accurately understand their current state. Until now, bridge inspections have involved a visual inspection in which inspection personnel come close to the bridges to perform inspection and hammering tests to investigate abnormal noises by hammering the bridges with an inspection hammer. Meanwhile, as there are a large number of bridges (for example, 730,000 bridges in Japan), and many of these are constructed at elevated spots; the issue is that the visual inspections are laborious and require huge cost. Another issue is the wide disparity in the quality of visual inspections due to the experience, knowledge, and competence of inspectors. Accordingly, the authors are trying to resolve or ameliorate these issues using unmanned aerial vehicle (UAV) technology, artificial intelligence (AI) technology, and telecommunications technology. This is discussed first in this paper. Next, the authors discuss the future prospects of bridge inspection using robot technology such as a 3-D model of bridges. The goal of this paper is to show the areas in which deployment of the UAV, robots, telecommunications, and AI is beneficial and the requirements of these technologies.

scholarly journals Flight Planning for Unmanned Aerial Vehicle Group to Detect Separate Parts of Boosters

2019 ◽  
Vol 25 (3) ◽  
pp. 381-394
Author(s):  
V. I. Goncharenko ◽  
◽  
G. N. Lebedev ◽  
D. A. Mikhaylin ◽  
◽  
...  
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Vehicle Group ◽  
Flight Planning ◽  
Aerial Vehicle

scholarly journals Experimental inspection of the dosing-sowing device by unmanned aerial vehicle for the resettlement of trichogrammes

2019 ◽  
pp. 61-71
Author(s):  
Maranda, S.
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Statistical Data ◽  
Experimental Studies ◽  
Material Distribution ◽  
Flight Altitude ◽  
Operating Modes ◽  
Aerial Vehicle ◽  
Biological Protection ◽  
The Right

Purpose. Improving the quality of the trichograms' resettlement by establishing rational operating modes of the dosing and sowing device of an unmanned aerial vehicle. Methods. Experimental studies using the method of planning a three-factor experiment, methods of statistical data processing. Results. Based on the analysis of the technical means for resettlement of the trichograms, the design of the dosing-sowing device of a unmanned aerial vehicle for the resettlement of the trichogram was substantiated. As a result of the experimental studies, it was established that during the deployment of a trichogram with a dosing-seeding device, a stable leakage of the material due to ejection was ensured by using diaphragms with a diameter of 2.5 mm or more. According to the results of the research it was established that with the increase in flight altitude, the quality of material distribution does not change significantly. But factors such as the height of the plants and the presence of obstacles on the field must be taken into account, so it is necessary to keep the flight altitude not less than 5 m. Due to changing the size of the confuser, the range of flight of the particle did not change, which leads to the conclusion to use a smaller cone of diameter due to which reduces the frontal resistance. When using a dosing-seeding device for resettlement of a trichogram on a quadracycle, due to air flow from propellers, the width of the capture significantly decreases. Therefore, for the qualitative distribution of biomaterials on the surface of the field, the distance between adjacent passages should be 6 m. Conclusions 1. The height of the flight of an unmanned aerial vehicle during the resettlement of the trichogram must not be less 5 m from the upper edge of the plant. 2. The uniform distribution of material on the surface of the field depends on the flight speed, which should be within the range of 3–5 m/s. 3. The quality of the material distribution increases from the right choice of the width of the ceiling, which should be about 6 m. Conclusions: dosing sowing device, ejector, unmanned aerial vehicle, biological protection of plants, reshaping of trichograms, norm of settlement, width of capture.

scholarly journals Kualitas Struktur Tanah di Setiap Bentuklahan di DAS Kaliwungu

2020 ◽  
Vol 33 (2) ◽  
Author(s):  
Adhera Sukmawijaya ◽  
Junun Sartohadi
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Soil Profile ◽  
Soil Structure ◽  
Soil Layer ◽  
Soil Management ◽  
Visual Evaluation ◽  
Structure Quality ◽  
Sustainable Soil Management ◽  
Aerial Vehicle

Pengelolaan tanah untuk pertanian yang berkelanjutan perlu untuk memeperhatikan 2 hal, yaitu bentuklahan dan tanah. Faktor tanah yang perlu diperhatikan adalah struktur tanah. Penelitian yang fokus pada bentuklahan, struktur tanah, dan implikasinya pada pengelolan belum pernah dilakukan di DAS Kaliwungu. Penelitian bertujuan untuk menganalisis struktur tanah pada setiap bentuklahan sebagai dasar untuk pengelolaan tanah yang berkelanjutan. Kualitas struktur tanah ditentukan dari observasi profil tanah pada setiap bentuklahan. Identifikasi bentuklahan dilakukan berdasarkan pengumpulan data dari Kendaraan Nirawak. Viusal Evaluation of Subsoil Strucutre (SubVESS) digunakan untuk menentukan kualitas struktur tanah berdasarkan karakteristik struktur tanah. Hasil menunjukkan bahwa area penelitian memiliki kualitas struktur tanah yang baik dengan mayoritas nilai kualitas strutktur tanah yang berkisan antara Ssq 1-3. Tidak diperlukan adanya perubahan dalam pengelolaan tanah pada area kajian.Soil management for sustainable agriculture needs to focus on 2 things, which are landform and soil. Soil factor that needs to be focused on is soil structure. The study that focused on landform, soil structure and its implication on soil management has never been done in Kaliwungu Watershed. This research aims to analyze soil structure on every landform as the basis to determine sustainable soil management. Soil structure quality was determine by soil profile observation on every landform. Unmanned Aerial Vehicle (UAV) photographic data was used to identify each landform. Visual Evaluation of Subsoil Structure (SubVESS) was used to identify the quality of soil structure based on its characteristic. The result shows that study area has a good soil structure quality with the majority of soil layer has a good soil structure quality (Ssq 1-3). There is no need to change in soil management is needed.

Autonomous Cooperative Flocking for Heterogeneous Unmanned Aerial Vehicle Group

2021 ◽  
pp. 1-1
Author(s):  
Jiehong Wu ◽  
Yuanzhe Yu ◽  
Jian Ma ◽  
Jinsong Wu ◽  
Guangjie Han ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Vehicle Group ◽  
Aerial Vehicle
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