I was watching a youtube video about the b2 this morning. It mentions that while it’s not completely invisible to radar, it only has a cross section about the size of a bee. It says that radars have to fine tune their displays to only show larger objects or else it would be too cluttered.
I guess my question is, why can’t they tune their displays to only show objects moving faster than ~ 300 mph?
In: Physics
Yeah, they can and do. MTI filtering and Pulse Doppler are the main technologies. Keep in mind they work based on relative velocity of the radar and target, which is less than the absolute velocity unless the target is flying directly at the radar.
There’s also a pretty big difference between “I think there might be an aircraft in that direction” and having precise enough range, altitude, and azimuth data on the target to actually do anything about it.
Latest Answers