Comparison of Time to Detect Definitions
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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This thesis concerns the measurement of times to detect multiple targets. It compares two common definitions of times to detection -- interdetection time, and search time to detection -- to a relatively new definition called time in field-of-view until detection. This comparison uses the data from the Thermal Pinpoint Test conducted from July to December 1983. Detection time distributions and mean times to detection were studied, looking for patterns in the geometric ordering of targets, and in the chronological ordering of detections. Observer search scan behavior was also briefly analyzed. Mean time in field of viewed displayed some interesting results. Significant correlation was discovered between the mean time to detect one target and the mean time to detect the next target. Additionally, a linear trend was found in the mean time in field-of-view over chronological ordered detections. Finally, a mathematical model was derived to explain the time to detect a sequence of targets.
- Infrared Detection and Detectors