Flight investigation of cockpit-displayed traffic information utilizing coded symbology in an advanced operational environment
National Aeronautics and Space Administration, Scientific and Technical Information Office, 1980 - 31 ページ
Studies initiated during the early 1970's provided initial exploration of traffic-situation display concepts in a simulation environment. During the present study, the traffic symbology was encoded to provide additional information concerning the traffic, which was displayed on the pilots' electronic horizontal situation indicators (EHSI). The purpose of this study, which was conducted using a research airplane representing an advanced operational environment, was to assess the benefit of coded traffic symbology in a realistic work-load environment. Traffic scenarios, involving both conflict-free and conflict situations, were employed. Subjective pilot commentary was obtained through the use of a questionnaire and extensive pilot debriefings. These results grouped conventiently under two categories: display factors and task performance. A major item under the display factor category was the problem of display clutter. The primary contributors to clutter were the use of large map-scale factors, the use of traffic data blocks, and the presentation of more than a few airplanes. In terms of task performance, the CDTI was found to provide excellent overall situation awareness. Additionally, the pilots expressed a willingness to utilize lesser spacing than the 2 1/2 nautical mile separation prescribed during these tests. (Author).
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advanced operational environment Air traffic control airplane data blocks airplanes displayed altitude and speed assess the benefit ATC control AVRADCOM Research benefit of coded CDTI equipped Cockpit Display coded symbology coded traffic symbology commentary was obtained Conflict Scenarios control mode dead band debriefing sessions decelerating approaches display clutter display factors displayed traffic electronic horizontal situation flight crew FLIGHT INVESTIGATION flight path Garren Hampton horizontal situation indicator landing sequence Langley Research Center map scales monitor the traffic monitoring traffic NASA number of airplanes overall situation awareness own-ship pilot questionnaire pilot work load plane potential conflict presentation of traffic primary questionnaire and extensive research airplane resulted route scale factors selected shown in figure simulation environment speed call Structures Laboratory Subjective pilot commentary subtended viewing angle task performance terminal-area test subjects tion traditional piloting task traf traffic data blocks traffic display Traffic scenarios vertical maneuvering vortices Work-load Yenni