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Your search keyword '"Yan, TingTing"' showing total 205 results
Start Over Author "Yan, TingTing" Publisher elsevier b.v.
205 results on '"Yan, TingTing"'

21. Multi-sensor dynamic scheduling for defending UAV swarms with Fresnel zone under complex terrain.

Author

Xing, Zehua, Hu, Shengbo, Ding, Ruxuan, Yan, Tingting, Xiong, Xia, and Wei, Xu

Subjects
RELIEF models, COMBINATORIAL optimization, DRONE aircraft, AIR defenses, RADAR
Abstract

The increasing role of unmanned aerial vehicle (UAV) swarms in modern warfare poses a significant challenge to ground and air defense systems. Considering complex terrain environments and multi-sensor resources including radar and photoelectric systems constraints, a novel multi-sensor dynamic scheduling algorithm is proposed in this paper. Firstly, a transmission model with Fresnel zone under complex terrain and sensor models for radar/photoelectric systems are established. Considering the constraints of 6 factors, such as pitch angle, array scanning angle and threat levels, a detection model is developed subsequently. Secondly, to meet the real-time requirements of ground and air defense systems, a fast calculation method for Fresnel zone clearance using adaptive buffer is achieved. Thirdly, an improved Hungarian algorithm is proposed to solve the combinatorial optimization problem of sensor scheduling. Finally, simulation experiments are conducted to evaluate the algorithm performance under different conditions. The results demonstrate that the proposed approach significantly reduces the sensor switching rate while achieving a high sensor-UAV matching rate and high-threat matching rate. Furthermore, the simulation results verify the effectiveness of the proposed algorithm when applied to multi-sensor scheduling for defending UAV swarms. • Modern militaries need advanced sensor scheduling solutions to defend UAV. • Considering the Fresnel zone under complex terrain is crucial. • Adaptive buffer enables rapid calculation of Fresnel zone clearance. • Multiple sensor constraints make scheduling problems realistic. • Improved algorithm effectively enhances matching rates while reducing switching. [ABSTRACT FROM AUTHOR]

Published
2024
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43. High-work-function transparent electrode with an enhanced air-stable conductivity based on AgNiCu core-shell nanowires for Schottky photodiode.

Author

Yan, Tingting, Yang, Wei, Wu, Limin, and Fang, Xiaosheng

Subjects
ELECTRIC conductivity, INFORMATION display systems, COPPER, DOPING agents (Chemistry), ELECTRODES, NANOWIRES
Abstract

• Through finely doping Cu in AgNi nanowires (NWs), the conductivity of AgNiCu NWs can acquire an enhanced air-stable conductivity with an improved tolerable temperature (over 240 ℃) and a prolonged high-temperature tolerance time (over 150 min). • The optimized AgNiCu NWs also achieve superior transparent conductivity as pure Ag NWs and high work function as AgNi NWs, which has been successfully applied in constructing an n-type photodiode with an effective rectification effect. • This work solves the conductivity limitation of high-work-function AgNi NWs and inspires a reasonable route for the conductivity improvement of other core-shell metal nanowires. Silver nanowires (Ag NWs) have promising application potential in electronic displays because of their superior flexibility and transparency. Doping Ni in Ag NWs has proven to be an effective strategy to improve its work function. However, AgNi NWs-based electrodes suffer from poor electrical conductivity under air exposure due to the low-conductivity NiO generated on its surface. Here, Cu was further doped in AgNi NWs to form AgNiCu NWs and regulate its surface oxide under long-term air exposure. Finally, it is demonstrated that the conductivity of AgNiCu NWs can acquire an improved tolerable temperature (over 240 °C) and prolonged high-temperature tolerance time (over 150 min) by finely regulating the doping content Cu, indicating an enhanced air-stable conductivity. The optimized AgNiCu NWs also achieve superior transparent conductivity as pure Ag NWs and high work function as AgNi NWs, which has been successfully applied in constructing an n-type photodiode with an effective rectification effect. [Display omitted] [ABSTRACT FROM AUTHOR]

Published
2025
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