Vaisala CT25K, User Manual

Page: 15 / 86

2.7 User Profiles
The Vaisala AviMet systems typically include workstations for using the AviMet software. The
number of different workstations in the system depends on the configuration of the system.
Vaisala configures the user profiles for the system. The applications available for each user
profile depends on the configuration of the system. To access the applications, the user must
log in to the workstation with the appropriate user profile.
Table 3 User Groups and Corresponding User Profiles
User Group User Profile
Air traffic controllers ATC
Observers Observer
Forecasters Forecaster
System maintenance personnel Maintenance
This manual covers the applications for the ATC , Observer , and Forecaster user profiles.
There are separate manuals for some applications. Refer to the list of related manuals. For
information on the applications for the
Maintenance user profile, see Vaisala AviMet
â
Low-
Level Windshear Alert System Maintenance Manual .
Table 4 Typical Software Applications by User Profile
Application Observer Forecaster ATC Maintenance
WeatherView x x x x
Graphical Windshear Display x x x x
Diagnostics x x x
ASCII Log View x x x
IO Terminal x
Sensor Selector (Optional) x x
Playback (Optional) x
2.8 LLWAS Algorithm
In the AviMet
â
Low-Level Windshear Alert System (LLWAS) the windshear conditions are
calculated using the latest version of the LLWAS phase III windshear algorithm developed by
National Center for Atmospheric Research (NCAR) for the U.S. Federal Aviation
Administration (FAA). The field sensors create a set of geometrically reasonable
anemometer triples (triangles) and pairs (edges). The windshear algorithm is implemented
in C++ language.
Chapter 2 – Product Overview
13