User's Manual

52
INCORRECT: Full Feedback
Figure 8.2.5a
Correcting feedback interference.
8.2.6 Multi-Path Beam Cancellation
If multi-path beam cancellation occurs, the target vehicle speed
sporadically blinks and reappears at semi-random intervals. This
type of interference occurs when the radar loses track of a target
vehicle, because the target is reflecting two or more signals, which
are interfering with each other. The G3™ is immune to multi-path
cancellation.
8.2.7 Patrol Harmonics
In all police radar, when a patrol vehicle passes a large, stationary
object such as a road sign, building, or overpass, the return signal
can briefly overload the processing circuitry. The G3™ detects this
condition and will not display speeds which are generated by
this overloading.
Antenna
Computer
INCORRECT: Some Feedback
CORRECT: No Feedback
• Targets traveling at speeds which are close to the
patrol speed can also mimic this condition and will
be rejected. The target window will show an “_H_”
indicating that it is a patrol harmonic. To process this
type of target, simply increase or decrease your patrol
speed by at least 2 mph (3 km/h).
G3™ User & Installation Manual