In order to reduce the complexity of a RADAR reception chain with digitaludbeamforming, we study the notion of sensor fusion . Once we have writtenudthat notion into proper mathematical language, we must wonder aboutudthe existence of an optimal way of gathering the sensors . As a matter ofudfact it turns out to he a multi criteria approach . The first choosen criteriaudare very classical in array processing, they belong to energy typeudcriteria : signal to noise ratio, and inteiference to noise ratio . On theudother hand, in order to take into account some practical aspects, a geometric criterion is introduced that happens to be efficient, accordingudto simulations .
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