Numerical modeling of a point-source image under relative motion of radiation receiver and atmosphere

1994 ◽  
Vol 37 (2) ◽  
pp. 116-121
Author(s):  
A. N. Kucherov ◽  
N. K. Makashev ◽  
E. V. Ustinov
Keyword(s):  
Numerical Modeling ◽  
Point Source ◽  
Relative Motion ◽  
Source Image ◽  
Radiation Receiver

PO-1600 Quasi invariance of a point source image response in the conjugate view method with depth

2021 ◽  
Vol 161 ◽  
pp. S1322-S1324
Author(s):  
A. Montes Uruen ◽  
A. López Romero ◽  
C. Escalada Pastor
Keyword(s):  
Point Source ◽  
Source Image

No wavefront sensor adaptive optics system for compensation of primary aberrations by software analysis of a point source image 1 Methods

2007 ◽  
Vol 46 (25) ◽  
pp. 6434 ◽  
Author(s):  
Enrico Grisan ◽  
Fabio Frassetto ◽  
Vania Da Deppo ◽  
Giampiero Naletto ◽  
Alfredo Ruggeri
Keyword(s):  
Point Source ◽  
Adaptive Optics ◽  
Wavefront Sensor ◽  
Source Image ◽  
Software Analysis ◽  
Adaptive Optics System

scholarly journals The Investigation of Lunar Limb Structure by Means of Stellar Occultations

1971 ◽  
Vol 2 ◽  
pp. 601-606 ◽  
Author(s):  
David S. Evans
Keyword(s):  
Standard Model ◽  
Point Source ◽  
Relative Motion ◽  
Position Angle ◽  
Small Scale ◽  
The Moon ◽  
The Standard Model ◽  
Stellar Occultations ◽  
Limb Structure

It has long been recognized that the analysis of occultation traces from point source stars might provide a means of investigating the structure of the lunar limb on a remarkably small scale, certainly of tens of meters, possibly on a scale of meters.The routine process of analysis of such an occultation trace produces a curve fitted to the standard model for a point source, in which the observed rate of fringe passage is matched to that computed from the rate and position angle of the relative motion of the moon with respect to the star background and the position angle of the point at which the occultation occurs. If θυ is the position angle towards which the relative motion of the lunar center takes place, θ that at which the occultation occurs, and ψ = θν — θ, then the predicted rate of the lunar limb perpendicular to itself at this point isRp = V cos ψwhere V is the velocity of the lunar center.

RECOVERY OF PHASE DISTORTIONS FIELD FROM A POINT SOURCE IMAGE

2010 ◽  
Vol 69 (14) ◽  
pp. 1229-1239
Author(s):  
S.I. Skuratovskiy
Keyword(s):  
Point Source ◽  
Source Image ◽  
Phase Distortions

The reflexion of an acoustic pulse by a plane vortex sheet

1973 ◽  
Vol 74 (2) ◽  
pp. 349-364 ◽  
Author(s):  
D. S. Jones
Keyword(s):  
Point Source ◽  
Relative Motion ◽  
Acoustic Pulse ◽  
Vortex Sheet ◽  
Instability Wave ◽  
Finite Region ◽  
Helmholtz Instability ◽  
Two Fluids ◽  
Reflected Wave

AbstractThis paper deals with the influence of a vortex sheet separating two fluids in relative motion on the radiation from a point source of sound. Both the harmonic and impulsive sources are considered and it is found that waves due to Helmholtz instability must be included in order to ensure that there is no field before the source is excited. The instability wave is confined to a finite region and dominates other disturbances in that region. It is suggested that the instabifity wave is initiated by the unrestricted growth of the specularly reflected wave.

Transmission of 10-μm radiation over coastal waters: comparison of point-source image intensities with aerosol extinction and MODTRAN calculations

1996 ◽  
Author(s):  
Piet B. W. Schwering ◽  
Gerrit de Leeuw ◽  
Alexander M. J. van Eijk
Keyword(s):  
Point Source ◽  
Coastal Waters ◽  
Source Image ◽  
Aerosol Extinction

Point-source integrating-cavity absorption meter: theoretical principles and numerical modeling

1997 ◽  
Vol 36 (24) ◽  
pp. 6123 ◽  
Author(s):  
John T. O. Kirk
Keyword(s):  
Numerical Modeling ◽  
Point Source

Formation of Point-Source Image by Time Change of the Medium

2009 ◽  
Vol 15 (5) ◽  
pp. 1368-1373 ◽  
Author(s):  
A.G. Nerukh ◽  
N.K. Sakhnenko
Keyword(s):  
Point Source ◽  
Time Change ◽  
Source Image
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