Unmanned aerial vehicle collision avoidance system - Silverman, Randy Lane (2019)
Keywords: AEROPLANES; AIRCRAFT; ANALOGOUS ARRANGEMENTS USING OTHER WAVES; AVIATION; COSMONAUTICS; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; HELICOPTERS; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PERFORMING OPERATIONS; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; SIGNALLING; TESTING; TRAFFIC CONTROL SYSTEMS; TRANSPORTING