DIGITUS^®

WAAS/EGNOS

Wide Area Augmentation System / European Geostationary Navigation Overlay Service

WAAS (Wide Area Augmentation System) is a part of the extension system (Satellite-Based Augmentation Systems, SBAS) for improving the existing US GPS system. WAAS-signals are transmitted by individual extra satellites on the same frequencies as GPS and are used for processing (relatively inaccurate) GPS position details. WAAS is transmitted at the moment by two to three satellites over US territory and cannot be received from all parts of the earth. EGNOS (European Geostationary Navigation Overlay Service) is a satellite-supported DGPS working in Europe as an extension system for satellite navigation. A few systems are being developed at the moment

WAN

Wide area network

A Wide area network (English: wide area network, often abbreviated in German as WAN), is a computer network which extends over a very large geographical area, unlike a MAN or a LAN. The number of connected computers is not limited to any specific amount. WANs extend over countries or even continents. WANs are used to network various LANs and also individual computers with each other.

WEP

Wired Equivalent Privacy

Wired Equivalent Privacy (WEP) is the former standard encoding algorithm for WLAN. It controls both the access to the network and also secures the confidentiality and integrity of the data. The procedure is considered to be unsafe because of various weak points and can be hacked within a matter of seconds after recording a sufficient quantity of data (which can take several minutes). Current WLAN installations should use secure WPA encoding for this reason.

WLAN

Wireless LAN (Wireless Local Area Network, WLAN, Wireless local area network) describes a „wireless“ local radio network.

WPA(2)

Wi-Fi Protected Access (WPA) is an encoding method for a wireless LAN.