WAAS


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Related to WAAS: DGPS

WAAS

[wäs or ¦dəb·əl·yü¦ā¦ā′es]

WAAS

(Wide Area Augmentation System) A system of earth stations and satellites that improves the tracking accuracy of the GPS navigation system to approximately 10 feet. Deployed in 2003, WAAS comprises a group of 25 reference stations and two satellites that cover North America. The stations track the GPS satellites and send correction signals to the WAAS satellites, which transmit them to WAAS-enabled receivers. See GPS augmentation system and GPS.
References in periodicals archive ?
It is expected that the WAAS GEO 6 payload will be launched in the second quarter of 2017.
It's assumed that if the aircraft has WAAS GPS navigation capability, it also has PBN capability.
The horizontal and vertical position error graphs show that 95 percent of the time, the errors were about four vertical meters and three horizontal meters, even without WAAS.
NovAtel is an existing partner of the FAA on the WAAS programme and provided and supported two previous generations of reference receivers for the WAAS ground network.
WAAS builds on Horizon's previous advances - made in conjunction with its sister airline, Alaska Airlines - in Flight Management System (FMS) technology, such as Required Navigational Performance (RNP) and Global Positioning System (GPS) satellite networks.
Avidyne's full-stack retrofit avionics line includes the AXP340 transponder, which can be connected with the company's IFD550/540/440 navigators for a WAAS position source.
An RNAV function requiring WAAS, using a final approach segment (FAS) data block that computes, displays and provides horizontal approach navigation using the horizontal accuracy and integrity of LPV without the approved vertical guidance.
An LPV is similar to an LNAV/VNAV except it is much more precise with one meter vertical and horizontal accuracy, courtesy of WAAS.
TELECOMWORLDWIRE-21 March 2007-Scotts Miracle-Gro deploys Cisco's WAAS solution(C)1994-2007 M2 COMMUNICATIONS LTD http://www.
As reported in Government Computing News, recent use of the WAAS in a series of demonstration flights along the East Coast successfully indicated the Raytheon-developed navigation system's capability to augment GPS data to help pilots keep their aircraft on track.
The deployment of PCTEL's WAAS antennas for the Global Positioning Satellite-Aided Geosynchronous Augmented Navigation (GAGAN) system further establishes PCTEL as a leader in the precision GPS antenna market.