IntuVueRDR-7000 Weather Radar Pilot's Guide
D201911000094 Principles of Weather Radar Use
Rev 0, Feb 2020 53
EFFECTS OF INTERFERING RF SOURCES
An interfering radio frequency (RF) source operating at a frequency
close to the radar’s operating frequency can create unusual returns
on the display. The interference may display as occasional isolated
dots, or as radial spikes of any color (including magenta) on the
display.
Algorithms in the software suppress most of these returns, but they
cannot always be completely suppressed. Once the source of
interference is no longer active, the spots will typically be removed
after the antenna re-scans the area and updates the memory
(approximately 30 seconds).
Adjusting the manual gain may help alleviate the effect of the
interfering source but the effect will not completely go away until the
interfering source is no longer in the radar’s field of view and that
area of the memory has been refreshed.
In the above picture, there are at least three sources of interference,
at different frequencies.
This figure shows a zoomed-in view of the near-range interference
from the previous figure.
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