Global Positioning System wide area augmentation system (WAAS) performance standard.

Details

• Alternative Title:
  GLOBAL POSITIONING SYSTEM WIDE AREA AUGMENTATION SYSTEM (WAAS) PERFORMANCE STANDARD
• Corporate Creators:
  United States. Federal Aviation Administration
• Subject/TRT Terms:
  • Global Positioning System
• Publication/ Report Number:
  GPS WAAS PS
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Federal Aviation Administration
• Abstract:
  The U.S. Global Positioning System (GPS) Standard Positioning Service (SPS) consists of spacebased ; positioning, navigation, and timing (PNT) signals generated from space vehicles orbiting the ; earth and delivered free of direct user fees for civil, commercial, and scientific uses worldwide. The ; Wide Area Augmentation System (WAAS) provides an augmentation signal to GPS, delivered free ; of direct user fees, that provides correction and integrity information intended to improve ; positioning navigation and timing (PNT) service over the United States (U.S.) and portions of ; Canada and Mexico. WAAS is the first operational implementation of an International Civil Aviation ; Organization (ICAO) compliant Space Based augmentation System (SBAS). This WAAS ; Performance Standard (WAAS PS) specifies the levels of navigation performance that will be ; available to suitably equipped users who use both the GPS SPS broadcast signals and the WAAS ; augmentation signal. The U.S. Government is committed to meeting the minimum levels of service ; specified in this WAAS PS. Refer to the GPS SPS PS for specific information regarding the USG ; commitment for the GPS SPS. ; Since WAAS was commissioned in 2003, actual performance has typically met and exceeded the ; minimum accuracy, integrity, continuity, and availability performance requirements specified in this ; WAAS PS and users can therefore generally expect improved performance over the minimum ; levels described here. Actual real-time performance, statistical performance and real-time data are ; provided on-line by the Federal Aviation Administration (FAA). Quarterly Performance Analysis ; Reports for both GPS and WAAS are also available at the FAA Technical Center WAAS Test Bed ; web site (http://www.nstb.tc.faa.gov/). Interested readers are encouraged to refer to this site and ; other sources for updated GPS and WAAS performance information. Note that the number of ; WAAS-based Localizer Performance with Vertical (LPV) guidance procedures now exceeds the ; number of Instrument Landing System (ILS) procedures in the United States. ; GPS will provide three new modernized civil signals in the future: L2C, L5, and L1C. With the ; additional signal on L5, airborne receivers will be able to correct for the line of sight ionospheric ; propagation delay error. This dual frequency (L1/L5) mode of operation will allow changes to be ; made in the delivery of GPS-based augmentation services, such as WAAS, but this Performance ; Standard does not consider those future changes. This WAAS Performance Standard only applies ; to WAAS augmented GPS SPS users of the L1 (1575.42 MHz) Coarse/Acquisition (C/A) signal and ; the WAAS Signal-In-Space (SIS) broadcast by a geostationary satellite (GEO). ; The WAAS PS will be updated as required to reflect substantial changes to WAAS augmentation ; services. In addition to the WAAS PS, readers are referenced to the GPS SPS PS and FAA ; Technical Standard Order (TSO)-145/146 for details in both the fundamental GPS SPS service and ; WAAS receiver equipment. WAAS also meets or exceeds the ICAO Annex 10, Standards and ; Recommended Practices (SARPs) for Global Navigation Satellite System (GNSS) Satellite Based ; Augmentation System (SBAS). ; 1st
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/16922/dot_16922_DS1.pdf
• File Type:
  [PDF - 1.38 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:1a4b6cb442d7b9ca3129f7705f838b07c2c0f0d62607c8a20978fb32adf7341b