Adaptive beamformer

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An adaptive beamformer is a beamforming system which performs adaptive spatial signal processing with an array of radar antennas (or phased array) in order to transmit or receive signals in different directions without having to mechanically steer the array. The main distinction between an adaptive beamformer and a conventional beamforming system is the ability of the former to adjust its performance to suit differences in its environment. A particularly important feature, in military applications, is the potential for an adaptive beamformer to reduce sensitivity to certain directions of arrival so as to counteract jamming by hostile transmissions.

Adaptive Beamforming Schemes

• Least Mean Squares Algorithm
• Sample Matrix Inversion Algorithm
• Recursive Least Square Algorithm
• Conjugate gradient method
• Constant Modulus Algorithm

See also

• Beamforming is spatial signal processing which makes spatial beam focused on the target direction and spatial beam nulled interference signal.
• Smart Antennas is multiple antenna systems having one of three structures which are single-input and multiple-output (SIMO), multiple-input and single-output (MISO), and multiple-input and multiple-output (MIMO) structures.
• MIMO is an advanced smart antenna system which has multiple transmit antennas at the transmitter and multiple receive antennas at the receiver.