An Experimental Study of Marine Radar and Electronic Chart Integration


  1. Donderi, D.C.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN);Human Factors North Inc, Toronto ONT (CAN)
Our goal was to discover the best way to present radar and electronic chart information to the marine navigator. We tested but adjacent displays of radar and chart information against a single display with radar information presented as a transparent overlay on the electronic chart. In the first study, participants read statements that related to information that could be acquired from radar alone, from the electronic chart alone, or that demanded both radar and chart information (e.g. "There is a radar return from the channel north of Smith's landing"). The they viewed the radar and chart information either as two separate displays or as a single overlay display, and answered "True" or "False" to each statement. Eighteen univeristy undergraduates and nine experienced marine navigators were tested. Accuracy was the same in both participant groups and for the separate and the overlay displays. Viewing time for the overlay display was shorter, and efficiency (accuracy/viewing time) of the overlay display was higher. In the second study, the same undergraduates and marine navigators re-aligned ten radar displays that had been translated and rotated out of alignment with their associated chart. The misalignment was presented on two adjacent, separate displays (one for radar and one for chart) or on a single overlay display. Participants took longer, but were more accurate, on the overlay display. TRUNCATED
Electronic charts
Report Number
DCIEM-CR-1999-055 — Contractor Report
Date of publication
30 Apr 1999
Number of Pages
Hardcopy;Document Image stored on Optical Disk

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