Thanks for the links! I'll try to look at those when I have some time. On a quick glance, it looks like most of those systems are ground based and pretty large

Thanks for the links! I'll try to look at those when I have some time. On a quick glance, it looks like most of those systems are ground based and pretty large (which works great for launch footage), the video posted appears to be looking down on the landing pad at the end, which leads me to believe the camera is located on a helicopter. Could a radar based camera be mounted on a helicopter, or could land-based tracking devices work in conjunction with a helicopter mounted camera to achieve the tracking?