Results 61 to 70 of about 186,351 (332)

Target tracking enhancement using a Kalman filter in the presence of interference [PDF]

open access: yes, 2009
In this paper we present a new target tracking enhancement system that uses a Kalman filter in the presence of interference. If the radar (seeker) is affected by different types of interference, this will affect the missile trajectory towards the target ...
Elgamel, S.A.E.H., Soraghan, J.J.
core   +1 more source

Simple (YGa)2O3/F‐SnO2 Heterojunction‐Based Solar‐Blind Ultraviolet Photodetector Operable in Two Modes With Superb Performance

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Yttrium doping was proposed to expand the bandgap and inhibit the oxygen vacancies of Ga2O3 to form (YGa)2O3 alloy with reduced background carriers and trap centers. Beneficially, simple vertical‐structured (YGa)2O3/FTO heterojunction photodetectors exhibit superb performance with particularly low dark current and fast photoresponse in both self‐driven
Zebin Zhou   +8 more
wiley   +1 more source

Trajectory Optimization for High-Speed and Long-Range Interceptor Based on Improved Adaptive hp Pseudospectral Method

open access: yesInternational Journal of Aerospace Engineering, 2022
The trajectory optimization design of interceptor is very important in the defense combat against a class of high-speed and strong-maneuvering aircraft. At present, an important idea is to use hp pseudospectral method to offline optimizes the trajectory ...
Changxin Luo   +3 more
doaj   +1 more source

Prescribed Performance Guidance Law with Multiple Constraints

open access: yesInternational Journal of Aerospace Engineering, 2022
In the terminal guidance phase of intercepting aerial target, a guidance law, satisfying impact angle constraint, acceleration constraint, and second-order dynamic characteristic of interceptor autopilot, is designed based on the prescribed performance ...
Xu Li, Jikun Ye, Chijun Zhou, Xiao Tang
doaj   +1 more source

Missile rolling tail brake torque system [PDF]

open access: yes, 1984
Apparatus for simulating varying levels of friction in the bearings of a free rolling tail afterbody on a canard-controlled missile to determine friction effects on aerodynamic control characteristics is described. A ring located between the missile body
Davis, W. T.
core   +1 more source

Comparison of different Constitutive Models for Concrete in ABAQUS/Explicit for Missile Impact Analyses [PDF]

open access: yes, 2010
This EUR report describes numerical missile impact analyses on a reinforced concrete slab performed at JRC-IE using the Finite Element (FE) solver ABAQUS/Explicit.
MARTIN Oliver
core   +1 more source

Interface Engineering in Solid‐State Sodium Batteries: Advances in Materials Design, Interfacial Strategies, and Multiscale Characterization

open access: yesInterdisciplinary Materials, EarlyView.
Since solid‐state sodium batteries (SSSBs) are a promising solution for advancing sodium‐based energy storage, it is necessary to systematically summarize the development process of SSSBs. It focuses on the role of interface engineering in addressing challenges such as materials design, interfacial strategies, and multiscale characterization.
Yonghuan Fu, Guosheng Shao, Yong Lei
wiley   +1 more source

Profiles of Psychological Capital and Work‐Related Well‐Being Among School Counselors During a Prolonged Emergency

open access: yesJournal of Counseling &Development, EarlyView.
ABSTRACT School counselors face an elevated risk of burnout due to heavy workloads and sustained stress, particularly during prolonged emergencies. This study examined psychological capital, a positive psychology construct comprising hope, efficacy, resilience, and optimism, as a potential resource for promoting counselors’ work‐related well‐being ...
Yuliya Lipshits‐Braziler   +3 more
wiley   +1 more source

Six-degree-of-freedom missile simulation using the ADI AD 100 digital computer and ADSIM simulation language [PDF]

open access: yes
The use of an AD 100 computer and the ADSIM language in the six-degree-of-freedom digital simulation of an air-to-ground missile is illustrated. The missile is launched from a moving platform, typically a helicopter, and is capable of striking a mobile ...
Zwaanenburg, Koos
core   +1 more source

Optical monitor panel Patent [PDF]

open access: yes, 1968
Optical monitor panel consisting of translucent screen with test or meter information projected onto it from rear for application in control rooms of missile launching and tracking ...
Griffin, F. D.
core   +1 more source

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