EXPERIMENTAL ROUTE GUIDANCE HEAD-UP DISPLAY RESEARCH

THE HEAD-UP DISPLAY IS A NEW TECHNIQUE DEVELOPED BY THE INDUSTRY AS A PILOT LANDING AID. THIS CONCEPT PROVIDES A VIRTUAL IMAGE SYMBOLIC REPRESENTATION OF THE VISUAL SCENE PROJECTED ON THE WINDSHIELD OF THE AIRCRAFT AND SUPERIMPOSED ON THE REAL WORLD. THE SYMBOLOLOGY IS FOCUSED AT INFINITY AND PERMITS THE PILOT TO OBSERVE BOTH THE REAL WORLD, THE SUPERIMPOSED IMAGE AND OTHER VISUAL CUES WITHOUT LOWERING HIS HEAD TO LOOK AT THE INSTRUMENT PANEL. THE TERM 'HEAD-UP DISPLAY' WAS COINED TO DESCRIBE THIS FEATURE. THIS TECHNIQUE HAS BEEN ADAPTED TO PRESENT DIRECTIONAL SYMBOLS TO THE DRIVER IN THE SAME MANNER SO THAT HE NEED NOT TAKE HIS EYES OFF THE ROAD. THE DESIGN OF THE VEHICLE DISPLAY UNIT IS DERIVED FROM EVALUATION AND TRADEOFF OF THE VARIOUS OPTICAL AND ELECTRONIC TECHNIQUES DEVELOPED FOR AN AIRCRAFT APPLICATION. DESIGN CRITERIA WERE ESTABLISHED TO MEET THE OBJECTIVES OF OPTIMUN IMAGE QUALITY, MINIMUM PACKAGE SIZE, AND MOST ECONOMICAL COST. SEVERAL ALTERNATIVE APPROACHES TO DISPLAY DESIGN WERE INVESTIGATED THAT INVOLVED VARIOUS TYPES OF LENSES, REFLECTING SURFACES, AND SYMBOL PRODUCTION TECHNIQUES. OTHER ENGINEERING CONSIDERATIONS INVOLVED INCLUDED TEMPERATURE AND VIBRATION ENVIRONMENT, VEHICLE DESIGN, AND SAFETY. A FEASIBILITY MODEL OF THE SELECTED APPROACH WAS BUILT AND DELIVERED TO THE BUREAU OF PUBLIC ROADS FOR ROAD TESTING IN THEIR EXPERIMENTAL VEHICLE AND SUBSEQUENT INCORPORATION IN THE ROUTE GUIDANCE TEST NETWORK. /AUTHOR/

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 62-70
  • Monograph Title: Route guidance
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00225488
  • Record Type: Publication
  • Report/Paper Numbers: Paper No 1
  • Files: TRIS, TRB
  • Created Date: Aug 25 1994 12:00AM