Man-Made Influences - Kustom Signals Golden Eagle II Operator's Manual

8.2.

Man-Made Influences

1. Various reflections can cause most radar to display
incorrect speed readings. These include real Doppler
signals such as shadowing, combined speeds, moving
cosine error and interference signals such as vehicle fan
speed, electrical noise and radio frequency interference.
2. Patrol speed shadowing may occur when the radar unit
receives a stronger signal, from a large vehicle traveling
the same direction, than the groundspeed return signal
of the patrol vehicle. This difference speed may be
placed in the PATROL window and used instead of the
proper patrol speed. See Section 8.3.
NOTE: If the Golden Eagle II is displaying a low
patrol speed due to shadowing, entering and
exiting Hold quickly should resolve the problem.
See Sec. 7.7.
3. The combined speed effect can occur when the patrol
vehicle and the target vehicle are approaching each
other at low speeds, usually in the 25 to 35 mph (40 to
56 km/h) range each, and at relative short distances,
usually less than 300 feet. The radar unit sees a strong
reflection from the combined speed signal and the radar
unit may display this speed instead of the true patrol
speed. See Section 8.3.
NOTE: The Golden Eagle II has special software
algorithms that allow the radar to correct a
combined reading. If the user suspects that the
radar is displaying a combined speed, entering
and exiting the Hold Mode quickly should correct
the combined reading. See Sec. 7.7.
Section 8—Interference
8.2