Patent ID: 7688253

Claim:
A method for resolving a processing radar return data to determine a mechanical angle to a target relative to a radar array having a right antenna, an ambiguous antenna, and left antenna, the left antenna being separated from the ambiguous antenna by an LA separation, the right antenna being separated from the ambiguous antenna by an RA separation, and the right antenna being separated from the left antenna by an RL separation, the radar return data including an LA phase difference between radar return data received at an ambiguous radar channel and a left radar channel, an RA phase difference between radar return data received at a right radar channel and an ambiguous radar channel, and a RL phase difference between radar return data received at a right radar channel and a left radar channel, the method comprising: determining, based upon a LA linear relationship, a characteristic number of LA wraps relative to the mechanical angle; determining, based upon a RA linear relationship, a characteristic number of RA wraps relative to the mechanical angle; determining, based upon a RL linear relationship, a characteristic number of RL wraps relative to the mechanical angle; listing all permutations of LA wraps, RA wraps, and RL wraps; determining, for each permutation, a truth relationship for each permutation; and populating a look up table with permutations where the truth relationship is true.