Studies Leading to Standardization of Radar Symbology: III. Discrimination in Mixed Displays, Cathode Ray Tube Presentation.
HUMAN ENGINEERING LABS ABERDEEN PROVING GROUND MD
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The report covers continued experiments toward standardization of radar symbology. Ten code complexes previously used in paper and pencil tests have been replicated on a cathode ray tube CRT. Each code consists of five geometric symbols representative of a display vocabulary. Thirty subjects repeatedly selected individual symbols from a mixed display. Performance was measured in terms of errors and time to locate. The best and worst codes confirmed paper and pencil experiments previously reported. Times and errors were consistently greater on the CRT. Symbol characteristics contributing to reduced efficiency are analyzed and tentative rules for CRT symbols are presented. Author
- Active and Passive Radar Detection and Equipment
- Human Factors Engineering and Man Machine Systems