While Sweep is pretty awesome! It is only going to be useful in tracking fairly large, slow moving targets. First the current model only sweeps in a horizontal plane at 2 to 10 times a second. This is great if you are intending to track, say cows on a golf course. If you want to track something like a bird that can move in 3D space it probably is not going to work for you. A 3D spherical scan is going to sample at about once per 100 seconds. Which means anything moving faster than about 2 miles per hour (3 fps) will be out of range before it is picked up on the second scan 100 seconds later.