Results 261 to 270 of about 36,786,045 (343)
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International Journal of Robust and Nonlinear Control, 2023
This article proposes a three‐dimensional impact time control guidance (ITCG) law without using time‐to‐go estimation, where the constrained field‐of‐view (FOV) is also considered. The guidance law design process is divided into two steps.
Jianan Wang +4 more
semanticscholar +1 more source
This article proposes a three‐dimensional impact time control guidance (ITCG) law without using time‐to‐go estimation, where the constrained field‐of‐view (FOV) is also considered. The guidance law design process is divided into two steps.
Jianan Wang +4 more
semanticscholar +1 more source
Impact Time Consensus Cooperative Guidance Against the Maneuvering Target: Theory and Experiment
IEEE Transactions on Aerospace and Electronic Systems, 2023Cooperative guidance issues with impact time consensus against a maneuvering target are considered in this article. Different from the existing achievements, the expected impact time does not need to be predesigned, which is coordinated by multiple ...
Jianglong Yu +5 more
semanticscholar +1 more source
Polynomial Guidance for Impact-Time Control Against Maneuvering Targets
Journal of Guidance Control and Dynamics, 2023To address the issue of intercepting maneuvering targets at a specific time, a polynomial guidance method for impact-time control is proposed in this paper.
Haojian Li +3 more
semanticscholar +1 more source
An Optimal Geometrical Guidance Law for Impact Time and Angle Control
IEEE Transactions on Aerospace and Electronic Systems, 2023This article proposes an impact time and angle control guidance law based on geometry without estimating the time-to-go. A moving virtual target is artificially placed on the desired collision line, and the missile pursues the virtual target to satisfy ...
Libing Hou +4 more
semanticscholar +1 more source
Impact time and angle constrained guidance via range‐based line‐of‐sight shaping
International Journal of Robust and Nonlinear Control, 2022In this article, impact time and angle constrained guidance law is proposed using a range‐based line‐of‐sight (LOS) shaping strategy. The relative motion of missile and target is described in a polar coordinate, where the LOS angle can be shaped as a ...
Yadong Chen +4 more
semanticscholar +1 more source
Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 2022
This article proposes a new terminal cooperative guidance law to control both impact time and impact angle in three-dimensional engagement. The presented guidance law employs on and normal line-of-sight accelerations to control the impact time and angle ...
Hong-Xia Li, Huijie Li, Yuan-li Cai
semanticscholar +1 more source
This article proposes a new terminal cooperative guidance law to control both impact time and impact angle in three-dimensional engagement. The presented guidance law employs on and normal line-of-sight accelerations to control the impact time and angle ...
Hong-Xia Li, Huijie Li, Yuan-li Cai
semanticscholar +1 more source
Field-of-View Constrained Impact Time Guidance Against Stationary Targets
IEEE Transactions on Aerospace and Electronic Systems, 2021This article proposes a guidance strategy that enables the interceptor to control its impact time against stationary targets, while also meeting the field-of-view (FOV) constraints of the on-board seeker.
Dwaipayan Mukherjee, S. R. Kumar
semanticscholar +1 more source
Three-Dimensional Nonsingular Impact Time Guidance With Limited Field-of-View
IEEE Transactions on Control Systems Technology, 2021This article proposes barrier Lyapunov function-based guidance strategies to achieve target interception, by a seeker-equipped interceptor having a limited field-of-view (FOV), at a prespecified impact time. A novel approach to respect the FOV constraint,
S. R. Kumar, Dwaipayan Mukherjee
semanticscholar +1 more source
Neuronavigation – Impact on Operating Time
Stereotactic and Functional Neurosurgery, 1997It is uncertain whether the use of image-guided surgery has an influence on operating time. We prospectively studied the time requirements which have to be invested for using image-guided surgery and performed a comparison of operating room times from 125 matched pairs of image-guided and conventional operations. Our study revealed that neuronavigation
O, Alberti +3 more
openaire +2 more sources
The Impact Factor: time for change
Australian and New Zealand Journal of Psychiatry, 2001Objective: The Impact Factor (IF) has received virtually no attention in the psychiatric literature, despite its long-term use, expanding influence and evidence of misapplication. We examine the IF's validity as a measure of a paper's scientific worth, and consider alternative ways to conduct such an appraisal.
S, Bloch, G, Walter
openaire +2 more sources