NAVIGATION RECOVERY BLOCK DESIGN DESCRIPTION
E. F. Hitts, Shirley A Prater · 1987
Abstract : This report describes the recovery block approach to fault tolerant software and illustrates its application to a flight navigation problem. The navigation problem using VOR (Visual Omnirange) and DME (Distance Measuring Equipment) is developed, especially with regard to its software specification and implementation needs. Related aspects of the recovery block approach are reviewed, and Ada implemented source code is presented. Keywords: Acceptance test, Avionics, Digital flight systems, Error detection, Fault tolerant, Software, Navigation aids, Recovery block, Software structure, and System architecture.