A test of aircraft recognition accuracy and decision speed compared the performance of single observers and four-man crews.

The research objectives were to compare the visual detection abilities of observers equipped with low- and moderate-powered optical systems, and to compare the detection capabilities of observers using different techniques or strategies for ...

OBSERVERSReduced-scale field tests were conducted using 1/72nd scale model aircraft to estimate the relationship between aircraft size (presented area) and recognition range by ground observers equipped with binoculars.

A survey was performed concerning the effectiveness of observing the trajectories of tracer ammunition as a method of adjusting antiaircraft firing.

;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, ...

Detection tests with low-flying jet aircraft were conducted to determine the effect of (a) varying the location of observers from the flight path, (b) using optical aids vs. unaided observation, and (c) varying the amount of temporal early ...