Electronic baffling of sensor arrays

Details Electronic baffling of sensor arrays Electronic baffling of sensor arrays

G - Physics

01

S

G01S 3/00 (2006.01) G01S 3/80 (2006.01) G01S 7/52 (2006.01)

Patent

CA 2716298

A method and system is described for reducing unwanted noise components/interfering targets detected through an ambiguous beam-steer direction, such as the ambiguous 'back-lobe' of a sensor array. A pressure sensor array 52 and a plurality of pressure gradient sub-arrays 54 1-N are beamformed individually at processing stages 56, 58 1-N to derive signals indicative of directional responses, one from each group or sub- group. The signals are scaled and weighted (60, 62 0.N) and processed to define a cardioid beam with nulls pointing in the ambiguous beam-steer direction.

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