Results 1  10
of
3,349
A New Method for Estimation of Velocity Vectors
 IEEE TRANS. ULTRASON., FERROELEC., FREQ. CONTR
, 1998
"... The paper describes a new method for determining the velocity vector of a remotely sensed object using either sound or electromagnetic radiation. The movement of the object is determined from a field with spatial oscillations in both the axial direction of the transducer and in one or two directi ..."
Abstract

Cited by 16 (3 self)
 Add to MetaCart
The paper describes a new method for determining the velocity vector of a remotely sensed object using either sound or electromagnetic radiation. The movement of the object is determined from a field with spatial oscillations in both the axial direction of the transducer and in one or two
Velocity Vectors for Features of Sequential Oceanographic Images
"... This paper investigates a fundamental problem of determining the position, orientation and velocity field of the Gulf Stream in timevarying imagery. We propose an approximation method to characterize the deformation of these image motions for the purpose of estimating the velocity field of these im ..."
Abstract

Cited by 4 (3 self)
 Add to MetaCart
of the mathematical foundation, and an implementation are presented in this paper. Keywords and Phrases: Velocity Vectors, Triangulation, Oceanographic Images, Features, Simplicial Approximations. 1 Introduction Infrared images of the ocean obtained from satellite sensors are widely used for the study of ocean
F Force Vector V Velocity Vector
"... This paper presents research conducted for system identification of an unmanned aerial vehicle to quantitatively compare control authority of conventional ailerons and jet actuators in lateral/directional motion. Locally linear statespace models were identified, via the Observer/Kalman filter algo ..."
Abstract
 Add to MetaCart
This paper presents research conducted for system identification of an unmanned aerial vehicle to quantitatively compare control authority of conventional ailerons and jet actuators in lateral/directional motion. Locally linear statespace models were identified, via the Observer/Kalman filter algorithm, to reveal the dynamics of the unmanned aerial vehicle testbed for different roll control effector configurations. The accuracy of the generated models is demonstrated by examination of residual error between the recorded flight states and the identified statespace model output using the recorded pilot inputs. Linear systems theory is used to (1) identify correct linearized model order for minimal realization of the equations of motion, (2) verify consistent plant dynamics across roll effector configurations, and (3) quantitatively assess roll effector authority across the configurations. The identified system models yield a quantitative comparison of control effectiveness of conventional and proposed aileron actuators which align with pilot feedback and test observations.
AVC89: Rigid Velocities Compatible with Five Image Velocity Vectors
"... The problem of obtaining rigid velocities compatible with a given set of image velocity vectors is algebraic in that it depends on the solution of simultaneous polynomial equations. We show that five image velocity vectors yield two quartic polynomial constraints on the translational part of the rig ..."
Abstract
 Add to MetaCart
The problem of obtaining rigid velocities compatible with a given set of image velocity vectors is algebraic in that it depends on the solution of simultaneous polynomial equations. We show that five image velocity vectors yield two quartic polynomial constraints on the translational part
ON STABILITY OF VELOCITY VECTORS FOR SOME PASSIVE TRACER MODELS
"... Abstract. A new result for stability of Markov semigroups is presented. We apply this result to the equation of the passive tracer in a compressible random flow showing that the velocity of a particle converges weakly to some random vector. 1. ..."
Abstract

Cited by 4 (1 self)
 Add to MetaCart
Abstract. A new result for stability of Markov semigroups is presented. We apply this result to the equation of the passive tracer in a compressible random flow showing that the velocity of a particle converges weakly to some random vector. 1.
Evidence for alignment of the rotation and velocity vectors in pulsars
, 2005
"... During the first forty years of observations of radio pulsars, various models have been developed to describe the basic characteristics of pulsar emission (e.g. Rankin 1983; Lyne & Manchester 1988). The application of these models to ..."
Abstract

Cited by 5 (0 self)
 Add to MetaCart
During the first forty years of observations of radio pulsars, various models have been developed to describe the basic characteristics of pulsar emission (e.g. Rankin 1983; Lyne & Manchester 1988). The application of these models to
THE USE OF ANGULAR VELOCITY VECTOR IN SHELL STRUCTURES
"... In the following work, the principle of deformation is investigated using a new parameter called the angular velocity. The deformed element of surface is fully defined by this new parameter that is whenever the element of the reference surface undergoes a motion the three components of angular veloc ..."
Abstract
 Add to MetaCart
In the following work, the principle of deformation is investigated using a new parameter called the angular velocity. The deformed element of surface is fully defined by this new parameter that is whenever the element of the reference surface undergoes a motion the three components of angular
Construction of Solenoidal Immersed Velocity Vectors Using the Kinematic Velocity–Vorticity Relation
"... The present paper suggests a method for obtaining incompressible solenoidal velocity vectors that satisfy approximately the desired immersed velocity boundary conditions. The method employs merely the mutual kinematic relations between the velocity and vorticity fields (i.e, the curl and Laplacian ..."
Abstract
 Add to MetaCart
The present paper suggests a method for obtaining incompressible solenoidal velocity vectors that satisfy approximately the desired immersed velocity boundary conditions. The method employs merely the mutual kinematic relations between the velocity and vorticity fields (i.e, the curl and Laplacian
Digital Pheromone Implementation of PSO with Velocity Vector Accelerated by Commodity Graphics Hardware
"... In this paper, a model for Graphics Processing Unit (GPU) implementation of Particle Swarm Optimization (PSO) using digital pheromones to coordinate swarms within ndimensional design spaces is presented. Particularly, the velocity vector computations are carried out on graphics hardware. Previous w ..."
Abstract

Cited by 1 (1 self)
 Add to MetaCart
In this paper, a model for Graphics Processing Unit (GPU) implementation of Particle Swarm Optimization (PSO) using digital pheromones to coordinate swarms within ndimensional design spaces is presented. Particularly, the velocity vector computations are carried out on graphics hardware. Previous
Results 1  10
of
3,349