What is WAAS?
http://www.garmin.com/aboutGPS/waas.html

Garmin Ltd.


This site from Garmin describes the Wide Area Augmentation System (WAAS). Topics include the way that WAAS originated, how it works, who benefits from it, and ways that it is improving. The site also features links to WAAS-enabled products.

This resource is referenced here:
Subject: Geography:Geospatial
Resource Type: Scientific Resources:Overview/Reference Work
Earth System Topics: Surface Processes