Another way of using bistatic radar is to look for holes. Pick a frequency band that has significant background noise and search for places where the backgroun

Another way of using bistatic radar is to look for holes. Pick a frequency band that has significant background noise and search for places where the background is consistently lower than average. Essentially, invert the detection algorithm. Nice thing about this approach is it can be done non-cooperatively; that is, the EM sources do not need to be controlled by whomever is running the receiver.