ALBEDOS (Airborne Laser Based Enhanced Detection and Observation System) is an active imaging device designed to enhance surveillance capability at night and under degraded weather conditions. It is currently being developed for use in search and rescue (SAR) operations. DCIEM was requested to carry out a human factors evaluation of the ALBEDOS human-machine interface (HMI) as part of a technical evaluation of the system. The human factors evaluation included a ...
This study examined the effect of alcohol on contrast sensitivity at normal levels of illumination. Contrast sensitivity was measured, using the Vistech VCTS 6500 Test Charts, on two groups - an alcohol group with peak Blood Alcohol Concentration (BAC) levels of 0.12% and a placebo group. Both groups were assessed prior to ingestion of alcohol, at the peak BAC of the alcohol group and at five one hour intervals following ...
Currently applicants for sonar operator must be classified H1 - hearing level not greater than 30 dB between 500 and 6000 Hz in both ears. It is difficult to find a sufficient number of applicants that meet this requirement, and if possible, the CF would like to lower it to H2 (hearing level not greater than 30 dB between 500 and 3000 Hz). For this reason a study was conducted ...
An experiment was conducted to determine whether the legibility of dot matrix alphanumeric symbols decreases if symbol size increases beyond some optimum. Previous research indicates that there is an optimum symbol size for printed text. This study showed that the legibility of symbols subtending a visual angle between 14' and 45' of arc was similar. The experiment also examined the effect of the ratio of dot diameter to between dot ...
Target detection performance was compared across three simulated sonar presentation modes: single channel binaural, four channel binaural, and eight channel dichotic detection. The multi-channel tasks simulated the 'search' modes of the AQS-13 and AQS-13B sonars respectively. The results showed a 3.4 dB decrement in performance for the four channel task and a 4.1 dB decrement in performance for the eight channel task compared to the single channel task. Almost half ...
Reports by Author
