HYBRID DATA ADAPTIVE AND DECISION ADAPTIVE ANTENNA ARRAY FOR AUTOMOTIVE RADAR

摘要

PROBLEM TO BE SOLVED: To provide a hybrid data adaptive and decision adaptive antenna array for an automotive radar which is small and economical and has a low computation burden.SOLUTION: An adaptive antenna array includes steerable transmitter antennas 12 and receiver antennas 14. The receiver antennas are arranged in sub-arrays for data adaptive and decision adaptive digital beamforming processing. A controllable phase shifter is coupled between each receiver antenna and a summation network in each receiver antenna sub-array. The plurality of sub-array summation networks are combined in mixers along with a receiver direction reference signal and output through A/D converters 16 to a digital beamformer processor 18.