Slew to Radar
Radars are fantastic geospatial sensors and nowadays, they are actually quite affordable for general perimeter surveillance. However, radars lack the ability to give a visual identification to allow the operator to determine if this is a good guy or a bad guy. However, if you combine the radar with a geo-referenced PTZ camera a good portion of this can be done automatically. Just like the fence & camera example, the radar hands off the target information to the geospatial VMS, its presented as bearing & range, but is easily converted to latitude & longitude. It can even provide speed for fast moving targets, allowing the camera to automatically center the object in its field of view for ID. The radar can then continue to provide the camera location information for repointing, as show in this video. You can see each time the camera re-centers after it is given new data from the radar.