User's Manual

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The VIP™ is now be configured to the radar.
2.5.5 How The VIP™ Helps Performance
Eliminates Shadowing
In Moving mode, the radar processes two speeds - patrol and
closing (target) . The stronger of the two, the patrol speed, is
created when the radar beam reflects from passing stationary
objects, such as the pavement or terrain the vehicle is traveling on.
However, some situations cause return signals to be larger than the
reflection from the ground, such as when the patrol vehicle
is rapidly overtaking a slow-moving 18-wheeler. Given a choice
between reading passing ground clutter or the large return signal
generated by the vertical expanse of the truck’s trailer, the radar
might ignore the ground speed and lock onto the stronger return
signal.
Rather than receiving a true patrol speed, the radar would
then read the differential speed between the vehicle and the
18-wheeler. The computer would then subtract this artificially low
speed from the closing speed and assign a higher speed to the
target. The VIP™ eliminates this problem by monitoring the speed
information being sent to the OBD II diagnostics port and using
that information to ensure that the patrol speed that the radar has
acquired is actually the ground and not the 18-wheeler.
Automatic Moving/Stationary Mode Switching
When activated the VIP™ will automatically switch between
moving and stationary modes based on the movement of the
patrol vehicle. Since the VIP™ uses the vehicle’s computer to tell it
when the vehicle is moving the radar will automatically switch to
stationary mode any time the patrol vehicle comes to a stop. Once
the vehicle starts moving again the VIP™ will switch the radar back
to moving mode.
G3 ™ User & Installation Manual