Shaping Aviation Integrity: Two RAIMs for Safety

This article describes new methods to improve the integrity of Global Positioning System (GPS) for applications in aviation. Focus is on addressing integrity monitoring, time-to-alert (TTA), and the necessary constellation strength. The article references the Federal Aviation Administration’s (FAA) GPS Evolutionary Architectural Study (GEAS) which was initiated with the goal of creating an architecture capable of bringing airplanes within 200 feet of the ground. It discusses the implications that the architecture will have on the Wide Area Segmentation Systems (WAAS) and Local Area Augmentation Systems (LAAS) programs. Techniques such as Receiver Autonomous Integrity Monitoring (RAIM) and relative (RRAIM) and absolute (ARAIM), which are used for Lateral Navigation (LNAV), and integrity determination, are described. The article evaluates the advantages of these architectures and their implications for constellations and satellite strength.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/10485104
• Authors:
  • Walter, Todd
  • Blanch, Juan
  • Enge, Per
  • Pervan, Boris
  • Gratton, Livio
• Publication Date: 2008-4

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Photos; Tables;
• Pagination: pp 42-46, 49
• Serial:
  • GPS World
  • Volume: 19
  • Issue Number: 4
  • Publisher: Advanstar Communications, Incorporated
  • ISSN: 1048-5104

Subject/Index Terms

• TRT Terms: Air transportation crashes; Aircraft navigational aids; Algorithms; Aviation safety; Crash avoidance systems; Global Positioning System; Navigation systems
• Identifier Terms: Global Navigation Satellite System; U.S. Federal Aviation Administration
• Subject Areas: Aviation; Operations and Traffic Management;

Filing Info

• Accession Number: 01095782
• Record Type: Publication
• Source Agency: UC Berkeley Transportation Library
• Files: BTRIS, TRIS
• Created Date: Apr 30 2008 7:31AM