GENESIS-VP™: User’s Manual
24
8.3 Multi-path Beam Cancellation
When multi-path beam cancellation occurs, the target vehicle speed display
will sporadically blank and reappear. This occurs when the radar looses track
of a target vehicle at semi-random intervals. The target vehicle is reflecting
two signals that are interfering with one another. When the phase of the two
signals is 180°, maximum interference occurs and the signals cancel, causing
the system to ignore the target vehicle. When there is only one target vehicle,
the system will reacquire the speed of the vehicle. However, when more
target vehicles are present, the system could lock onto another vehicle. The
operator can minimize the confusion of multi-path beam cancellation with an
accurate tracking history of the original target vehicle.
8.4 Scanning
All radar antennas, for police applications, are designed to be operated from
a fixed mounting, or to be hand-held in a steady position. Moving or
“scanning” the antenna past stationary objects can cause the system to detect
the motion. A speed-reading obtained from scanning requires deliberate
misuse.
To Next Page
Loading...
