If you wish to contribute or participate in the discussions about articles you are invited to contact the Editor

WAAS General Introduction: Difference between revisions

From Navipedia
Jump to navigation Jump to search
No edit summary
Line 8: Line 8:
}}
}}


The Wide Area Augmentation System (WAAS) is an air navigation aid developed by the [http://www.faa.gov Federal Aviation Administration (FAA)] to augment the Global Positioning System (GPS), with the goal of improving its accuracy, integrity, and availability. Essentially, WAAS is intended to enable aircraft to rely on GPS for all phases of flight, including precision approaches to any airport within its coverage area.


WAAS uses a network of ground-based reference stations, in North America and Hawaii, to measure small variations in the GPS satellites' signals in the western hemisphere. Measurements from the reference stations are routed to master stations, which queue the received Deviation Correction (DC) and send the correction messages to geostationary WAAS satellites in a timely manner (every 5 seconds or better). Those satellites broadcast the correction messages back to Earth, where WAAS-enabled GPS receivers use the corrections while computing their positions to improve accuracy.
The Wide Area Augmentation System (WAAS) is the United States [[SBAS General Introduction|Satellite Based Augmentation System]]. The programme, started in 1992, is being carried out by the [http://www.faa.gov/ Federal Aviation Agency (FAA)]<ref name="FAA_NAV_HISTORY">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/history/satnav/index.cfm Navigation Services - History - Satellite Navigation, [http://www.faa.gov/ FAA]</ref> and is specially developed for the civial aviation community.<ref name="FAA_WAAS">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/waas/ Navigation Services - Wide Area Augmentation System (WAAS), [http://www.faa.gov/ FAA.]]</ref> The system, which was declared operational in late 2003,<ref name="STANFORD_WAAS">[http://waas.stanford.edu/research/waas.htm Wide Area Differential GPS (WADGPS), Stanford University]</ref> currently supports thousands of aircraft approaches in more than one thousand airports in USA and Canada.
 
The International Civil Aviation Organization (ICAO) calls this type of system a [[SBAS General Introduction|satellite-based augmentation system (SBAS)]]. Europe and Asia are developing their own SBASs, the Indian GPS Aided Geo Augmented Navigation (GAGAN), the European Geostationary Navigation Overlay Service (EGNOS) and the Japanese Multi-functional Satellite Augmentation System (MSAS), respectively. Commercial systems include StarFire and OmniSTAR.<ref>[http://en.wikipedia.org/wiki/Wide_Area_Augmentation_System WAAS in Wikipedia]</ref>


==WAAS Related Articles==
==WAAS Related Articles==

Revision as of 11:08, 22 July 2011


WAASWAAS
Title WAAS General Introduction
Author(s) GMV.
Level Basic
Year of Publication 2011
Logo GMV.png


The Wide Area Augmentation System (WAAS) is the United States Satellite Based Augmentation System. The programme, started in 1992, is being carried out by the Federal Aviation Agency (FAA)[1] and is specially developed for the civial aviation community.[2] The system, which was declared operational in late 2003,[3] currently supports thousands of aircraft approaches in more than one thousand airports in USA and Canada.

WAAS Related Articles

WAAS Logo

The following articles include further information about different important topics related to a WAAS:

Notes

References

  1. ^ Navigation Services - History - Satellite Navigation, [http://www.faa.gov/ FAA
  2. ^ Navigation Services - Wide Area Augmentation System (WAAS), [http://www.faa.gov/ FAA.]
  3. ^ Wide Area Differential GPS (WADGPS), Stanford University
Retrieved from "https://gssc.esa.int/navipedia/index.php?title=WAAS_General_Introduction&oldid=7121"