Results 1 to 10 of about 8,041 (308)
Optimizing the angle of arrival positioning error of a UAV via an improved nutcracker optimization algorithm [PDF]
Scientific ReportsTo address the issues of insufficient accuracy due to nonlinear error accumulation in traditional drone angle-of-arrival (AOA) positioning and the tendency of existing optimization algorithms to get stuck in local optima, this paper proposes a ...
Yinglei Li +4 more
doaj +2 more sources
Evolution of weaponry in female bovids [PDF]
Proceedings of the Royal Society B: Biological Sciences, 2009 Weaponry is ubiquitous in male ungulates and is driven by intrasexual selection, but the mystery surrounding its sporadic presence in females remains unsolved. Female horns are often smaller and shaped differently to male horns, suggesting a different function; indeed, hypotheses explaining the presence of female horns include competition for food ...
Theodore Stankowich, Tim Caro
exaly +3 more sources
Path-Following and Obstacle-Avoidance Control of USV Based on Finite-Distance Convergence
Journal of Marine Science and Engineering, 2023 The control problem of avoidance-path-following is a critical consideration in the research of unmanned surface vehicle (USV) navigation control, and it holds great significance for the navigation safety of USVs.
Junbao Wei +5 more
doaj +1 more source
Shock and Vibration, 2022 An analytical, numerical, and experimental investigation on the transverse vibrations of a finite beam with periodically arrayed beam-like resonators was carried out.
Peng Guo, Qizheng Zhou
doaj +1 more source
A detection method for impact point water columns based on improved YOLO X
AIP Advances, 2022 This paper proposes an improved method to accurately and expediently detect water columns at the shells’ impact point. The suggested method combines a lightweight depthwise convolutional neural network (MobileNet v3) with the You Only Look Once X (YOLO X)
Zhi Wang +4 more
doaj +1 more source
Dynamic sequential radar cross section properties of airborne corner reflector in array
IET Radar, Sonar & Navigation, 2023 With the spread of airborne corner reflector (ACR) in the field of shipborne equipment, radar guided anti‐ship missile is facing new challenges. In order to achieve the mastery of the jamming principle of this apparatus, the paper studied its motion ...
Lingang Wu +3 more
doaj +1 more source
Concept of Military Asset Management System in Indonesian Armed Forces
Defense and Security Studies, 2022 The Internet of Things (IoT) is a very fast-growing technology and has a huge impact on our daily life, including military performance. In the military, IoT known as the Internet of Military Things (IoMT) or Internet of Battlefield Things (IoBT) has the
Zairullah Azhar Azhar +3 more
doaj +1 more source
Optimal distributed cooperative jamming resource allocation for multi‐missile threat scenario
IET Radar, Sonar & Navigation, 2022 Jamming resources allocation (JRA) is an essential task in clustered combat environments. Especially in cases with multiple threats, efficient JRA is imperative for protecting key assets.
Zhaodong Wu +3 more
doaj +1 more source
IEEE Access, 2020 In this paper, the ship’s rotating propeller is a considered as rotating magnetic dipole. The shaft-rate magnetic field is modeled, and an inversion calculation is utilized to realize the magnetic target localization.
Pengfei Lin +3 more
doaj +1 more source
Summarization of Remaining Life Prediction Methods for Special Power Plants
Applied Sciences, 2023 With continuous improvements in integration, totalization and automation, remaining useful life predictions of mechanical equipment have become a key feature of technology and core element of equipment prediction and health management.
Weige Liang +4 more
doaj +1 more source