The effect of minimum target size and other factors on the performance envelope of automated moving target indication systems for airborne surveillance with EO sensors

2011 ◽  
Author(s):  
Paul A. Boxer ◽  
Tom Loveard
Keyword(s):  
Target Size ◽  
Moving Target ◽  
Performance Envelope

Motion Extrapolation and Velocity Transposition

Perception ◽  
1997 ◽  
Vol 26 (7) ◽  
pp. 875-889 ◽  
Author(s):  
Alexander N Sokolov ◽  
Walter H Ehrenstein ◽  
Marina A Pavlova ◽  
C Richard Cavonius
Keyword(s):  
Visual System ◽  
Target Size ◽  
Moving Target ◽  
Motion Extrapolation ◽  
Slow Velocity

A study of the effect of the size of a moving target and the extent of its visible motion on motion extrapolation is reported. Targets (a horizontal pair of dots separated by either 0.2 or 0.8 deg) moved across a 10 deg rectilinear path and were then occluded. Observers pressed a key when they thought the leading dot of a hidden target had reached a randomly specified position (0–12 deg from the point of occlusion). In experiment 1, in agreement with velocity-transposition predictions, at moderate (5 deg s−1) and rapid (10 deg s−1) velocities extrapolation times were longer for large targets than for small ones. At slow velocity (2.5 deg s−1) this effect was reversed. In experiment 2 the effect of target size at moderate velocity was found for a short (2.5 deg) visible path. However, the extrapolation time increased with shorter (2.5 deg versus 10 deg) paths. A proposed account of these effects suggests that the visual system performs a spatiotemporal scaling, according to the velocity-transposition principle, not only of visible motion but also of extrapolated motion.

Some Recent Results in Quiescent Prominence Spectrometry

1979 ◽  
Vol 44 ◽  
pp. 41-47
Author(s):  
Donald A. Landman
Keyword(s):  
Real Time ◽  
Computer System ◽  
Spectral Response ◽  
Absolute Intensity ◽  
Solar Observatory ◽  
Target Size ◽  
Small Target ◽  
Signal Averaging ◽  
Quiescent Prominence

This paper describes some recent results of our quiescent prominence spectrometry program at the Mees Solar Observatory on Haleakala. The observations were made with the 25 cm coronagraph/coudé spectrograph system using a silicon vidicon detector. This detector consists of 500 contiguous channels covering approximately 6 or 80 Å, depending on the grating used. The instrument is interfaced to the Observatory’s PDP 11/45 computer system, and has the important advantages of wide spectral response, linearity and signal-averaging with real-time display. Its principal drawback is the relatively small target size. For the present work, the aperture was about 3″ × 5″. Absolute intensity calibrations were made by measuring quiet regions near sun center.

Where's That Wascally Wilber? The Challenges of Hitting a Moving Target

PsycCRITIQUES ◽  
2007 ◽  
Vol 52 (13) ◽  
Author(s):  
Douglas A. MacDonald
Keyword(s):  
Moving Target

Pediatric rehabilitation psychology: Rehabilitating a moving target.

2017 ◽  
Vol 62 (3) ◽  
pp. 223-226 ◽  
Author(s):  
Jacqueline N. Kaufman ◽  
Sarah Lahey ◽  
Beth S. Slomine
Keyword(s):  
Moving Target ◽  
Pediatric Rehabilitation ◽  
Rehabilitation Psychology

Accurate Imaging Method for Moving Target with Arbitrary Shape for Multi-Static UWB Radar

2013 ◽  
Vol E96.B (7) ◽  
pp. 2014-2023 ◽  
Author(s):  
Ryo YAMAGUCHI ◽  
Shouhei KIDERA ◽  
Tetsuo KIRIMOTO
Keyword(s):  
Arbitrary Shape ◽  
Imaging Method ◽  
Moving Target ◽  
Uwb Radar ◽  
Accurate Imaging
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