The Use of Analog Track Angle Error Display for Improving Simulated GPS Approach Performance

Details

• Creators:
  Oman, C.M. ; Huntley, M. Stephen, Jr. ; Rasmussen, S. ; Robinson, S.K
• Corporate Creators:
  John A. Volpe National Transportation Systems Center (U.S.) ; Massachusetts Institute of Technology
• Subject/TRT Terms:
  • Air traffic control
  • Aircraft operations
  • Flight simulators
  • Global Positioning System
  • Navigation systems
  • Instrument displays
  • Human factors
  • man/machine interfaces
  • displays
  • manual control
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• Publication/ Report Number:
  DOT-VNTSC-FAA-95-29 ; DOT/FAA/AR-95/104
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final Report June 1994 - May 1995
• Corporate Publisher:
  United States. Department of Transportation. Federal Aviation Administration
• Abstract:
  The effect of adding track angle error (TAE) information to general aviation aircraft cockpit displays used for GPS ; nonprecision instrument approaches was studied experimentally. Six pilots flew 120 approaches in a Frasca 242 light ; twin aircraft simulator using crosswind and turbulence. Twenty-five-mile-long approach geometries were used, with and ; without 45 degree dogleg turns on final approach. Performance and workload using three TAE display formats were compared ; against results with two control formats presenting cross track error (XTE) only. Pilots found that the TAE displays ; simplified determination of wind correction angle, and that they consistently chose to use analog rather than numeric ; TAE data. Statistically significant differences between display formats and between pilots were found. The largest ; average improvement in initial leg intercept and tracking performance resulted when the conventional "ten dot" XTE ; display was supplemented with a sliding pointer display of TAE, moving in the same direction as aircraft bank. A second ; TAE format, a sliding/rotating pointer integrated display, yielded the greatest improvement (35X) in the width of the ; short final approach flight technical error envelope, but pilots reported occasional problems interpreting this display. ; Both of these TAE formats improved final approach intercept and tracking performance after 45 degree turning maneuvers. ; The addition of TAE information to the receiver display helped pilots create outer loop lead, and yielded approach ; performance improvements comparable to relocating XTE information to an HSI within the pilot's primary scan. Bedford ; workload scores were not significantly influenced by display format, but were found to depend on approach geometry and ; phase.
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• Format:
  PDF
• Funding:
  FA5 E2 / A5 0 0 7
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/8651/dot_8651_DS1.pdf
• File Type:
  [PDF - 3.82 MB]
• Collection(s):
  Volpe Center
• Main Document Checksum:
  urn:sha-512:86d8b9bc26ffc50256f83d3b4365256db3f451277ed6f7bf0c8702e9a48428d1240ff609997fa29dfb47f6e7fb1e63540e1d1be28fdd4931cd2c3b85d07c17f7