||New Solution Determining Optimal Amplitude Distribution for Sparse Cylindrical Sonar Arrays
||(Nguyen Dinh Tinh) ; (Trinh Dang Khanh)
|| Phased array antenna; Cylindrical arrays; Sparse arrays; Sonar arrays; Amplitude distribution
||This paper proposes a new solution to determine the optimal amplitude distribution reducing side-lobe level (SLL) to less than the required value and generate the narrowest halfpower beamwidth (HPBW) in sparse cylindrical sonar arrays. The proposed solution was implemented based on the explicit expression of a beam pattern, separation of the amplitude distribution into the row and the column, and an analysis of the beam patterns from simulations.
The merits of the proposed solution were evaluated by simulation in two cases with isotropic elements and directional elements.