Results 81 to 90 of about 5,368,406 (286)

Performance and Stability Investigation of a line of sight based Guidance System in the Presence of Measurement Noise [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2018
Usually vehicles are equipped with guidance algorithm based on line of sight (LOS) angle. In this way, some measurements like target acceleration, LOS rate, and closing velocity are provided for the guidance algorithm.
Valiollah Ghaffari, Paknoosh Karimaghaee
doaj  

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

open access: yesAdvanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner   +9 more
wiley   +1 more source

A Novel Integral Sliding Mode-Type Continuous Guidance Law With Autopilot Lag for Intercepting Non-Cooperative Maneuvering Targets

open access: yesIEEE Access, 2019
This paper proposes an integral sliding mode guidance law with the constraints of the line-of-sight angle and its rate for the interception of a non-cooperative maneuvering target.
Yan Xiaodong, Lyu Shi
doaj   +1 more source

Single Pair of Weyl Points Evolve From Spin Group‐Protected Nodal Line in Half‐Metallic Ferromagnet V3S4

open access: yesAdvanced Functional Materials, EarlyView.
A spin group (SG)‐based mechanism is proposed to realize a single pair of Weyl points. PT‐symmetric nodal lines (NLs) persist under T‐breaking, protected by the combination of SG and P symmetry. When considering spin‐orbit coupling, the SG‐protected NL will split into Weyl points, which will also induce anomalous transport phenomena arising from ...
Shifeng Qian   +6 more
wiley   +1 more source

A Review on the Recent Development of Planar Snake Robot Control and Guidance

open access: yesMathematics
Snake robots, inspired by the biology of snakes, are bionic robots with multiple degrees of freedom and strong robustness. These robots represent a current area of significant research interest within the field of robotics. Snake robots have a wide range
Ningwei Li   +5 more
doaj   +1 more source

Terminal Guidance Law for UAV Based on Receding Horizon Control Strategy

open access: yesComplexity, 2017
Terminal guidance law against the maneuvering target is always the focal point. Most of the literatures focus on estimating the acceleration of target and time to go in guidance law, which are difficult to acquire. This paper presents a terminal guidance
Zhenglong Wu   +3 more
doaj   +1 more source

Analytical guidance law development for aerocapture at Mars [PDF]

open access: yes
During the first part of this reporting period research has concentrated on performing a detailed evaluation, to zero order, of the guidance algorithm developed in the first period taking the numerical approach developed in the third period. A zero order
Calise, A. J.
core   +1 more source

Synchrotron Radiation for Quantum Technology

open access: yesAdvanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader   +10 more
wiley   +1 more source

Rapid near-optimal aerospace plane trajectory generation and guidance [PDF]

open access: yes
Effort was directed toward the problems of the real time trajectory optimization and guidance law development for the National Aerospace Plane (NASP) applications.
Calise, A. J.   +2 more
core   +1 more source

Trademark Parody: Lessons From the Copyright Decision in Campbell v. Acuff-Rose Music, Inc. [PDF]

open access: yes, 1996
Parodies have long provided many of us with amusement, entertainment,and sometimes even information. An effective parody can convey one or more messages with powerful effect. The message may be a political statement, social commentary, commercial speech,
Myers, Gary
core   +3 more sources

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