If it is important to know the precise location of the patrol vehicle, permit hits, and hotlist hits, the SharpZ3 trunk unit must include the Navigation option module.
The navigation expansion module provides additional navigation information. This information can be used with any type of AutoVu™ mobile deployment, but it is required for patrol vehicles running Genetec Patroller™ in City Parking Enforcement with Wheel Imaging mode.
The module is also mandatory for installations that include wheel-imaging cameras.
How precise positioning is obtained
The navigation expansion module is connected to a satellite receiver that obtains satellite positioning information. The system also receives odometry information from the vehicle VSS or odometry sensor. This provides greater reliability than satellite positioning alone. For example, if you drive through a long tunnel, the satellite signal will be lost, but the odometry information lets the AutoVu™ system continue to track changes in the speed and direction of the vehicle.
The trunk unit is also connected to the vehicle’s reverse signal (usually by tapping the reverse lights), and to the in-vehicle computer.