THE EFFECT OF MONITOR TYPE AND DISPLAY ORIENTATION ON THE DETECTION OF LINES ON A SIMULATED PASSIVE SONAR DISPLAY

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Authors
  1. McFadden, S.M.
  2. Giesbrecht, B.L.
  3. Kalmbach, K.C.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
Abstract
With current sonar technology the operator must handle large quantities of data. The primary medium for displaying this data is the CRT. Because of the limited space available on the CRT, the operator must scan multiple pages of data rapidly if he or she is to monitor all of the information. Thus, signal visibility is critical. To ensure good visibility, it is necessary to under the impact of display characteristics on the detectability of signals on a display. The study examined two factors that could influence the detection of lines on a frequency-time-intensity (FTI) display. The first was type of monitor - multichrome or monochrome. Current systems use a monocrhome monitor because its resolution is believed to be superior to a multichrome monitor. The second was orientation of the signals realtive to the orientation of the CRT raster. Currently, the signals on an FTI display are perpendicular to the CRT raster. The study examined the advantage of having signal lines on the FTI display fall aong the scan lines of the CRT. Two experiments were carried out to assess the effect of these factors on the detection of signals of varying strength presented on a simulated FTI display.
Keywords
Signal lines;Monochrome monitors;Multichrome monitors;Frequency-time-intensity display
Report Number
DCIEM-95-32 — Technical Report
Date of publication
01 Oct 1995
Number of Pages
32
DSTKIM No
96-01383
CANDIS No
155560
Format(s):
Document Image stored on Optical Disk;Hardcopy

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