Results 21 to 30 of about 68,732 (167)

Improving real-time drone detection for counter-drone systems [PDF]

, 2021
The number of unmanned aerial vehicles (UAVs, also known as drones) has increased dramatically in the airspace worldwide for tasks such as surveillance, reconnaissance, shipping and delivery. However, a small number of them, acting maliciously, can raise
Çetin, Ender, Barrado Muxí, Cristina, Pastor Llorens, Enric   +2 more
core   +1 more source

Embedded Firmware Rehosting System Through Automatic Peripheral Modeling

IEEE Access, 2023
Embedded devices are becoming increasingly common and, as a result, more susceptible to security threats. Consequently, analyzing the firmware of these devices is essential for detecting and mitigating vulnerabilities.
Youngwoo Lee, Juhwan Kim, Jihyeon Yu, Joobeom Yun   +3 more
doaj   +1 more source

Analysis of Wind Effect on Drone Relay Communications

, 2023
In this study, we realized a relay network using drones and analyzed the impact of the sway angle of a drone’s attitude on communication in a windy flight environment. Drones in flight act as radio relay stations and communication among them is performed
Jiro Hirokawa, Tetsuro Imai, Hiroyuki Shimizu, Takahiro Matsuda, Yuya Tajima, Kazuki Maruta, Tomotaka Kimura, Takefumi Hiraguri   +7 more
core   +1 more source

Improved Electrical and Optical Properties of IGZO Transparent Conductive Oxide Due to Microwave Treatment: Application to Silicon Solar Cells

IEEE Access, 2022
The electrical and optical properties of IGZO-based transparent conductive oxide (TCO), fabricated by reactive-sputtering, are optimized using post microwave treatment (MWT), not rapid temperature annealing (RTA), for silicon solar cell.
Myoungsu Chae, Doowon Lee, Sungho Kim, Hee-Dong Kim   +3 more
doaj   +1 more source

Improving the Accuracy of Vehicle Position in an Urban Environment Using the Outlier Mitigation Algorithm Based on GNSS Multi-Position Clustering

Remote Sensing, 2023
In this paper, we propose a multi-position cluster-based weighted position estimation method that minimizes the influence of multipath (MP)/non-line-of-sight (NLOS) signals using a global navigation satellite system (GNSS) receiver.
Hak Ju Kim, Yong Hun Kim, Joo Han Lee, So Jin Park, Bo Sung Ko, Jin Woo Song   +5 more
doaj   +1 more source

A Dynamic Checkpoint Interval Decision Algorithm for Live Migration-Based Drone-Recovery System

, 2023
Numerous services and applications have been developed to monitor anomalies or collect various sensing information in large-scale monitoring areas using drones.
Jinman Jung, Junyoung Heo, Jungkyu Han, Hong Min, Joonhyouk Jang, Bongjae Kim, Dong Sop Rhee   +6 more
core   +1 more source

Inherent Limitations of Smartphone GNSS Positioning and Effective Methods to Increase the Accuracy Utilizing Dual-Frequency Measurements

Sensors, 2022
Xiaomi Mi8 with a Broadcom BCM47755 chip, an Android smartphone that supports multi-constellation (GPS, GLONASS, Galileo, BeiDou, and QZSS) and dual-frequency (L1/E1 and L5/E5), was launched in May 2018.
Jeonghyeon Yun, Cheolsoon Lim, Byungwoon Park   +2 more
doaj   +1 more source

Scheduling and Securing Drone Charging System Using Particle Swarm Optimization and Blockchain Technology [PDF]

, 2022
Unmanned aerial vehicles (UAVs) have emerged as a powerful technology for introducing untraditional solutions to many challenges in non-military fields and industrial applications in the next few years. However, the limitations of a drone’s battery
Torky, Mohamed, Mohamed Torky, Aboul Ella Hassanien, Essam Goda, Václav Snášel, Hassanien, Aboul Ella, Snášel, Václav, El-Dosuky, Mohamed, Goda, Essam, Mohamed El-Dosuky   +9 more
core   +1 more source

Joint Resource and Trajectory Optimization for Energy Efficiency Maximization in UAV-Based Networks

Mathematics, 2022
The explosive growth of unmanned aerial vehicles (UAVs)-based networks has accelerated in recent years. One of the crucial tasks of a UAV-based network is managing and allocating resources, including time, power, fly trajectory, and energy resources.
Tran Van Tung, To Truong An, Byung Moo Lee   +2 more
doaj   +1 more source

Signal Expansion Method in Indoor FMCW Radar Systems for Improving Range Resolution

Sensors, 2021
As various unmanned autonomous driving technologies such as autonomous vehicles and autonomous driving drones are being developed, research on FMCW radar, a sensor related to these technologies, is actively being conducted. The range resolution, which is
Seongmin Baek, Yunho Jung, Seongjoo Lee
doaj   +1 more source