scholarly journals Development of a Generic Time-to-Contact Pilot Guidance Model

2018 ◽  
Vol 41 (4) ◽  
pp. 904-915 ◽  
Author(s):  
Linghai Lu ◽  
Michael Jump ◽  
Gareth D. Padfield
Keyword(s):  
Time To Contact ◽  
Guidance Model ◽  
Generic Time

A Meta-Analysis of Intraepidermal Nerve Fibre Density in Healthy and Neuropathic Subjects: A Proposed Guidance Model

2018 ◽  
Author(s):  
Alexandros Samolis ◽  
maria Piagkou ◽  
Constantinus Politis ◽  
Nikolaos Pantazis ◽  
Theodore Troupis ◽  
...  
Keyword(s):  
Nerve Fibre ◽  
Meta Analysis ◽  
Fibre Density ◽  
Guidance Model

Does the Presence of Biological Motion Facilitate Time-to-Contact Estimations?

2020 ◽  
Vol 64 (1) ◽  
pp. 1874-1875
Author(s):  
Ellen Szubski M.S. ◽  
Savana King ◽  
Rick Tyrrell Ph.D.
Keyword(s):  
Biological Motion ◽  
Time To Contact

Mechanism of generic time variability for chaotic pattern selection

1996 ◽  
Vol 53 (1) ◽  
pp. 1246-1249
Author(s):  
Jung-Im Kim ◽  
Hie-Tae Moon
Keyword(s):  
Time Variability ◽  
Pattern Selection ◽  
Generic Time

scholarly journals A qualitative study of supervisors' experiences with nursing students in practice, a new guidance model

2021 ◽  
pp. 105111
Author(s):  
Frøydis Vasset ◽  
Sven Inge Molnes ◽  
Lindis Helberget ◽  
C. Teige Barbro ◽  
Marianne Frilund
Keyword(s):  
Nursing Students ◽  
Qualitative Study ◽  
Guidance Model

TIME-TO-CONTACT INFORMATION ESTIMATION FOR MONOCULAR MOBILE ROBOTS

2008 ◽  
Vol 05 (03) ◽  
pp. 223-233 ◽  
Author(s):  
RONG LIU ◽  
MAX Q. H. MENG
Keyword(s):  
Mobile Robots ◽  
Optical Flow ◽  
Active Contour Model ◽  
Visual Navigation ◽  
Moving Object ◽  
Time To Contact ◽  
Temporal Derivative ◽  
Novel Method ◽  
Derivatives Of ◽  
Flow Experiments

Time-to-contact (TTC) provides vital information for obstacle avoidance and for the visual navigation of a robot. In this paper, we present a novel method to estimate the TTC information of a moving object for monocular mobile robots. In specific, the contour of the moving object is extracted first using an active contour model; then the height of the motion contour and its temporal derivative are evaluated to generate the desired TTC estimates. Compared with conventional techniques employing the first-order derivatives of optical flow, the proposed estimator is less prone to errors of optical flow. Experiments using real-world images are conducted and the results demonstrate that the developed method can successfully achieve TTC with an average relative error (ARVE) of 0.039 with a single calibrated camera.

3D Nonlinear Guidance Law for Bank-to-Turn Missile

2011 ◽  
Vol 317-319 ◽  
pp. 727-733
Author(s):  
Shuang Chun Peng ◽  
Liang Pan ◽  
Tian Jiang Hu ◽  
Lin Cheng Shen
Keyword(s):  
Three Dimensional ◽  
Lyapunov Theory ◽  
Line Of Sight ◽  
Rate Model ◽  
Guidance Law ◽  
Terminal Constraints ◽  
Guidance Laws ◽  
3D Guidance ◽  
Guidance Model ◽  
Vector Description

A new three-dimensional (3D) nonlinear guidance law is proposed and developed for bank-to-turn (BTT) with motion coupling. First of all, the 3D guidance model is established. In detail, the line-of-sight (LOS) rate model is established with the vector description method, and the kinematics model is divided into three terms of pitching, swerving and coupling, then by using the twist-based method, the LOS direction changing model is built for designing the guidance law with terminal angular constraints. Secondly, the 3D guidance laws are designed with Lyapunov theory, corresponding to no terminal constraints and terminal constraints, respectively. And finally, the simulation results show that the proposed guidance law can effectively satisfy the guidance precision requirements of BTT missile.

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