The use of electronic charts and radar in marine navigation

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Authors
  1. Donderi, D.C.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN);Human Factors North Inc, Toronto ONT (CAN)
Abstract
Mariners carried out simulated navigation exercises under three conditions: radar-electronic chart overlay, separate radar and electronic chart displays, or free choice of either the overlay or the separate display. Objective performance was measured by course track, distance from navigation hazards, and vessel speed. Mariners also completed self-ratings of performance and difficulty. There were no significant objective performance differences amond the three conditions, but mariners rated their own performance as higher the free choice condition. The exercises with simple chart displays were rated as producing better performance, less demand and less frustration than the exercises with complex charts. A second set of experiments replicated an earlier finding that the byte size of the compressed file produced by the JPEG file compression algorithm is positively correlated with subjective judgments of image complexity for electronic chart displays and for chart-radar overlays, and extended this finding to nature scenes and web pages.
Keywords
Electronic charts;Radar overlays;Complexity;ECDIS;User evaluation
Report Number
DCIEM-CR-2001-003 — Contractor Report
Date of publication
20 Jan 2001
Number of Pages
67
DSTKIM No
CA010583
CANDIS No
515400
Format(s):
Hardcopy;Document Image stored on Optical Disk

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