Research on Stadimetric Ranging: Visually Matching the Apparent Size of Objects.
Abstract
;HUMRRO-TR-73-27DAHC19-73-C-0004DA-2-Q-062107-A-745*Visual acuity, *Range finding, *Performance(Human), *Antiaircraft gunnery, Target discrimination, Sizes(Dimensions), Test methods, Simulation, Errors, Estimates, Optical equipment, Statistical analysis*Stadimetric ranging, JudgmentFive experimental tasks were devised that simulated a stadimetric ranging task requiring observers to estimate when air defense open- and cease-fire events should occur when engaging inbound and outbound aircraft. The laboratory tasks varied the location of the stadimetric aid with respect to the target's location. The results indicated that accuracy and bias (differential error for inbound and outbound judgments) in the perceptual judgments were affected by the location of the size-judgment aid. Variation in visual acuity was related to perceptual errors for some tasks. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1973
- Accession Number
- AD0772994
Entities
People
- Robert D. Baldwin
Organizations
- Human Resources Research Organization