User's Manual

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5.2
Upon receiving the "target" Doppler signal, the processing
unit automatically computes the difference between the
speed of the patrol vehicle and the target vehicle. The
speed of the approaching vehicle registers in the TARGET
window. If, for example, a patrol vehicle is traveling 55
MPH and an approaching vehicle is traveling 65 MPH, the
FalconHR would process the groundspeed of 55 MPH and
the combined speed of 120 MPH. The DSP would subtract
the patrol speed from the combined speed (120 - 55 = 65).
The PATROL window would display 55 and the TARGET
window would display 65.
In the Moving Same Direction mode of operation, the
target Doppler is received from a target traveling in the
same direction as the patrol vehicle. These "groundspeed"
Doppler and the "difference" Doppler signals are received
and sent to the DSP. The Difference Doppler is the speed
difference between the patrol vehicle and a vehicle
traveling in the same direction. The FalconHR uses its
directional determination capabilities to automatically
determine if the target vehicle is traveling faster or slower
than the patrol vehicle. The unit will display the patrol
speed then automatically add or subtract the "difference"
speed to the patrol speed for the target speed.
If the patrol vehicle's speed was 55 mph and a target was
traveling in the same direction at 70 mph, the FalconHR
would display 55 in the PATROL window then add the
"difference” Doppler signal (15) to the patrol speed (55 +
15 = 70) and display 70 in the TARGET window.