A Mathematical Cross-Correlation for Time-Alignment of Cockpit Voice Recorder and Flight Data Recorder Data

A new method is described for performing timing correlations between flight data recorder (FDR) and cockpit voice recorder (CVR) information. This method involves the use of the cross-correlation function to search the typically larger FDR data file for a best match to the event pattern present in the CVR data file. The results of this search give a first-order estimate of the time differential between identical events as recorded on both units. A simple curve fit may then be employed to obtain a general conversion from time as represented in the CVR and time as represented in the FDR.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/62512190
• Authors:
  • Gregor, Joseph A
• Publication Date: 2006

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References;
• Pagination: pp 43-53
• Serial:
  • Journal of Accident Investigation
  • Volume: 2
  • Issue Number: 1
  • Publisher: National Transportation Safety Board
  • Serial URL: http://www.ntsb.gov/Academy/about.htm#journal

Subject/Index Terms

• TRT Terms: Correlation analysis; Flight recorders; Information processing; Mathematical methods; Time
• Uncontrolled Terms: Cockpit voice recorders; First order equations; Timing
• Subject Areas: Aviation; Data and Information Technology; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 01035985
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 27 2006 8:09AM