Section 8--Interference
8.1
8. INTERFERENCE
8.0.
Overview
Interferences from external sources may affect the standard
operation of any radar device, including the Eagle II. These
influences can be natural or man-made, however the Digital
Signal Processing circuitry will eliminate most of these
influences and a knowledgeable operator should be able to
determine the nature of the influences and their effect, if
any, on the performance of the Eagle II.
8.1.
Natural Influences
1. Heavy rains and blowing dust can cause a scattering
effect, which may reduce the effective range of the
Eagle II. The patrol speed can also be affected by
driving rain. It is recommended that the operator check
the patrol speed-reading and the patrol vehicle's
speedometer often during rainy periods.
2. Terrain can affect the range of the Eagle II. Improper
aiming of the antenna can cause the radar to appear to
have short range. If the target vehicle were on a slight
incline, the antenna could be shooting short of the
intended target vehicle.
3. Strong reflections from roadside objects, such as large
signs, parked cars and buildings can cause double
bounce reflections, which are the same as the patrol
speed. These "harmonics" are detected by the DSP,
which inhibits their display. The TARGET window will
display "--", double dashes, until this condition no
longer exists.
