Description: The beam forming is the reconstructed source signal from the sensor array. (1) to achieve by increasing the contribution of the expected source; (2) by inhibiting the interference source. Classical beam formation requires knowledge of the direction of the observation direction (the direction of the expected source). Blind beam-forming tries to restore the source without expecting the source direction information.
Beamforming is the basic idea is: through the array output weighted summation, the time will be antenna array "guide" to a direction of the beam, the location of desired signal to get maximum output power orientation DOA estimation is given.
Although the direction of the diagram is omnidirectional antenna array, but the array output after a weighted sum, but can be adjusted to the array receiving gathered in one direction, the direction of the gain is equivalent to form a "beam". That's the physics of the beam formation.
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