2Naverus Inc. Method for Implementing Required Navigational Performance lh-ocedures [P]. International: WO20(O/099076, 2006/09/21.
3Order 8260.52, United States Standard for Required Navigation Performance (RNP) Approach Procedures with Special Aircraft and Aircrew Authorization Required (SAAAR) [S].
4Shih-Yih Young. Real-Time 4-D Trajectory Planning for RNP Flight Operations [C]// The 2009 Integrated Communications, Navigation and Surveillance Conference. USA: IEEE, 2009: 1-9.
5David G Bell, Frank Kuehnel, Chris Maxwell, et al. NASA World Wind: Opensouree GIS for mission operations [C]// Aerospace Conference 2007. New York, USA: IEEE Press, 2007: 1-2.
6NASA. World Wind Wiki [EB/OL]. (2009-12-8) [2010-8-30]. http://worldwindcentral.com/wiki/.