Open AccessA computational inversion method for interference suppression in reconfigurable thinned ring arrays
Author(s) -
Federico Boulos,
Luca Dall’Asta,
Giorgio Gottardi,
Mohammad Abdul Hannan,
Alessandro Polo,
Aarón Ángel Salas-Sánchez,
Marco Salucci
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1476/1/012016
Subject(s) - thinning , interference (communication) , inversion (geology) , computer science , algorithm , set (abstract data type) , main lobe , signal (programming language) , ring (chemistry) , electronic engineering , telecommunications , engineering , geology , ecology , channel (broadcasting) , paleontology , biology , programming language , chemistry , organic chemistry , antenna (radio) , structural basin
An inversion strategy for dynamically thinning (i.e.. turning on and off) the radiating elements of ring arrays in order to maximize the signal-to-noise ratio is presented. Since thinned arrays provide only average sidelobe performances, but. the directions of arrival ( DoAs ) of interferences can be arbitrary, a set. of thinning configurations that. guarantee a sufficient interference rejection in the whole angular region outside the main lobe is off-line selected. The on-off status of the array elements is then dynamically switched among such precomputed thinning sequences until the one providing the best, signal-to-interference performance is identified. A set of numerical results is reported and discussed to assess the effectiveness and potentialities as well as current limitations of the dynamic thinning approach in dealing with interference suppression of ring arrays.