DTED Integrity Monitoring Using Differential GPS and Radar AltimeterThis paper discusses a real-time digital terrain elevation data (DTED) integrity monitor for Civil Aviation applications. Providing pilots with Synthetic Vision (SV) displays containing terrain information has the potential to improve flight safety by improving situational awareness and thereby reducing the likelihood of Controlled Flight Into Terrain (CFIT). Utilization of the DTED for flight-critical terrain-displays, however, requires a DTED integrity check and timely integrity alerts to the pilots in those cases where DTED may provide hazardous misleading information. The discussed integrity monitor checks the consistency between the sensed terrain profile as computed from DGPS and radar altimeter data and the terrain profile as given by the DTED. Probability of agreement between these two profiles is used to monitor the DTED integrity. A case study to verify the integrity monitor#s performance is presented based on data collected during flight testing performed by NASA at Asheville, NC.
Document ID
20070031756
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Young, Steve (NASA Langley Research Center Hampton, VA, United States)
deHaag, Maarten Uijt (Ohio Univ. United States)
Gray, Robert (Pennsylvania State Univ. State College, PA, United States)
Date Acquired
August 23, 2013
Publication Date
January 1, 2007
Subject Category
Avionics And Aircraft Instrumentation
Meeting Information
Meeting: IAIN/ION 25th Anniversary Congress in Association with the US ION Annual Meeting