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Moving radar theory
Moving traffic radar refers to units that have the ability to function while the patrol vehicle itself is
in motion. They have this ability in addition to their standard stationary capabilities. When being
used as moving traffic radar, the MPH
PYTHON III will simultaneously display both the patrol
vehicle speed and the target vehicle speed. Like the stationary radar, the moving radar is based
on the Doppler theory. However, with moving radar, the signal processing is more involved than
with stationary. The radar receives reflected signals from both the target and the roadway. The
target signal contains information on the combined speed of the two vehicles while the patrol
signal has the information concerning the speed of the police vehicle. The receiver (mixer diode)
in the antenna provides all of this information.
