Honeywell IntuVue RDR-4000 Pilot's Manual page 6

Internal Topography Database
•
o
Used to reduce ground clutter in weather displays and to reduce
weather returns from the MAP display.
More sensitive weather detection for more accurate weather depiction
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o Improved long-range performance.
o 3D scanning detects more weather close to the aircraft as
compared to other weather radar systems.
Differentiation of weather in and out of path of the aircraft
•
o
In AUTO mode, weather that is far above or below the aircraft's
flight path is displayed in a different pattern than Flight Path
Weather.
o In MAN mode, view horizontal slices through the weather in
1,000-foot increments, from ground level to 60,000 ft.
Map mode for identification of terrain features
•
o
Use MAP mode for identifying prominent terrain features, such as
coastlines, lakes, and large built-up urban areas.
The RDR-4000 is a technically advanced system, but as always, there
are physical limitations to consider.
The use of a topography database results in a significant reduction in
•
ground returns. However, the database is not aware of man-made
reflectors such as buildings at airports and cities. Therefore, it is
possible that not all ground clutter will be eliminated.
The antenna beam is very narrow at close ranges and widens
•
significantly with range. Therefore, the resolution and accuracy of
weather reflectivity is better at ranges closer to the aircraft.
Introduction
2
IntuVue RDR-4000 Weather Radar Pilot's Guide
060-4492-000
Rev 7, February 2015