Very Low Altitude Detection of Small Stationary Targets at Very Slow Speeds: a Simulation Study Using Strip Photography.
Abstract
The target-seeking behavior of observers was examined at four different image motion rates using strip photography film taken at a 497-foot altitude. Targets imaged at a scale of 1:274 on a 14 by 14-inch display screen showing a 320 by 320-foot ground area were garbage cans and manhole covers in a residential suburb. Film moved through the projector at 3, 6, 9, or 15 inches/minute representing conditions of either rapid (flash) reporting or screening, or else aerial search for small targets with a 2.2X stabilized periscope at very slow helicopter speeds. Thirty-eight subjects were dividied into four groups. Each group was tested at a different speed: 2.1, 4.2, 6.3, and 10.5 knots respectively. Conclusions are drawn about rapid film screening and about periscopic search for small targets at very slow speeds. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1972
- Accession Number
- AD0754928
Entities
People
- Herschel C. Self
Organizations
- Air Force Research Laboratory