Distance estimation to multiple targets using band-limited noise signal

2010 ◽  
Vol 93 (7) ◽  
pp. 53-60
Author(s):  
Tetsuji Uebo ◽  
Noboru Nakasako ◽  
Norimitsu Ohmata ◽  
Hanae Itagaki
Keyword(s):  
Distance Estimation ◽  
Noise Signal ◽  
Multiple Targets ◽  
Band Limited

scholarly journals Distance Estimation to Multiple Targets Using Band-Limited Noise Signal

2008 ◽  
Vol 128 (7) ◽  
pp. 1117-1122 ◽  
Author(s):  
Tetsuji Uebo ◽  
Noboru Nakasako ◽  
Norimitsu Ohmata ◽  
Hanae Itagaki
Keyword(s):  
Distance Estimation ◽  
Noise Signal ◽  
Multiple Targets ◽  
Band Limited

Cross-Well Actuation of Bistable Structures Subjected to Noise Disturbance

2017 ◽  
Author(s):  
Masoud Zarepoor ◽  
Onur Bilgen
Keyword(s):  
Composite Laminate ◽  
Damping Ratio ◽  
Turbine Blades ◽  
Noise Signal ◽  
Wind Gust ◽  
Wind Turbine Blades ◽  
Bending Stresses ◽  
Bistable Structure ◽  
Dimensional Parameters ◽  
Band Limited

Large loads due to fluid-structure interaction can lead to high bending stresses and fatigue failure in wings and wind turbine blades. A solution for the mentioned problem is using a bistable composite laminate for load alleviation. A bistable composite laminate is capable of attaining two statically stable shapes, and it can be designed to alleviate a critical load, such as wind gust, by snapping from one stable position to the other. Piezocomposite actuators can be used to reverse the snap-through and bring back the structure to its original optimal aerodynamic shape, after the gust load is alleviated. However, there will always be a limit on the size of the piezocomposite actuator used; hence, severe force and energy constraints exist to achieve the snap-through. In this context, this paper focuses on the minimum required actuation energy for performing snap-through of a bistable structure. The paper shows how the required energy for cross-well transfer varies as a function of damping ratio and frequency ratio at specific harmonic force amplitude when the system is externally disturbed with a band-limited noise signal. A band-limited noise signal is chosen to model external/ambient disturbances. This paper uses the Duffing-Holmes equation as a one-degree-of-freedom representative model of a bistable structure. This equation is numerically solved to calculate the required energy for cross-well oscillation under different system and forcing conditions. Various non-dimensional parameters are used to highlight interesting phenomena. It is found that the domain of low energy regions decreases by increasing the level of noise.

Optimal radiometric detection of band-limited noise signal

2017 ◽  
Author(s):  
V. K. Volosyuk ◽  
V. V. Pavlikov ◽  
S. S. Zhyla ◽  
O. V. Odokienko
Keyword(s):  
Noise Signal ◽  
Radiometric Detection ◽  
Band Limited

Constrained-Energy Dynamic Cross-Well Motion of Bistable Structures Subjected to Noise Disturbance

2018 ◽  
Vol 18 (04) ◽  
pp. 1850047 ◽  
Author(s):  
Masoud Zarepoor ◽  
Onur Bilgen
Keyword(s):  
Signal To Noise Ratio ◽  
Damping Ratio ◽  
Minimum Energy ◽  
Noise Signal ◽  
Critical Force ◽  
Noise Disturbance ◽  
Force Ratio ◽  
Bistable Structure ◽  
Band Limited ◽  
Bistable Structures

Bistable structures have two stable equilibrium positions and can be utilized to maintain a static shape with no energy consumption. This paper focuses on the minimum energy required for performing snap-through of a bistable structure subjected to noise disturbance. This paper uses the Duffing–Holmes equation as a one-degree-of-freedom representative model of a bistable structure. This equation is numerically solved to calculate the energy required for cross-well oscillation under different system and forcing conditions. The paper shows how the energy required for cross-well transfer varies as a function of damping ratio and frequency ratio at specific harmonic force amplitude when the system is externally disturbed with a band-limited noise signal. A magneto-elastic bistable beam is fabricated and tested to validate the used mathematical model. Various nondimensional parameters are used to highlight interesting phenomena. The relationships between signal-to-noise ratio (SNR), dynamic-to-static force ratio, and damping ratio to the response behavior are shown. It is found that the domain of low energy regions decreases by increasing the level of noise. Additionally, underactuated bistable and linear systems behave similarly for high levels of noise. This paper specifically identifies the critical force ratio, which allows for snap-through as a function of critical nondimensional system parameters.

Detection and temporal integration of brief band‐limited increments and decrements within a broadband noise signal

1995 ◽  
Vol 98 (5) ◽  
pp. 2907-2907
Author(s):  
C. Formby ◽  
M. G. Heinz ◽  
S. E. Hargus ◽  
J. W. Zeiders
Keyword(s):  
Temporal Integration ◽  
Noise Signal ◽  
Broadband Noise ◽  
Band Limited

Eye movement in response to single and multiple targets.

1985 ◽  
Author(s):  
R. V. Kenyon ◽  
Y. Y. Zeevi ◽  
P. A. Wetzel ◽  
L. R. Young
Keyword(s):  
Eye Movement ◽  
Multiple Targets

Perceptions of Effort and Distance Estimation

2012 ◽  
Author(s):  
Matthew E. Jacovina ◽  
David N. Rapp
Keyword(s):  
Distance Estimation

The effect of training in distance estimation on the judgment of size-at-a-distance

1952 ◽  
Author(s):  
Eleanor J. Gibson ◽  
Joann Smith
Keyword(s):  
Distance Estimation

Culture affects visual distance estimation

2010 ◽  
Author(s):  
Tamer Soliman ◽  
Alison E. Gibson ◽  
Arthur M. Glenberg
Keyword(s):  
Distance Estimation ◽  
Visual Distance
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