Synthesis of circular isophoric sparse arrays by using compressive-sensing
Paper in proceedings, 2016

A design approach for large-scale sparse arrays based on Compressive Sensing has been recently introduced in the literature and extended to include complex EM effects and scan performance. However, that approach cannot directly control the number of excitation amplitudes. Here, we apply a two-step procedure that first synthesizes continuous rings with unconstrained amplitudes using an iterative ℓ1-norm minimization approach, and then replaces them with a circular isophoric ring array with a number of elements proportional to the original amplitude of each ring. The procedure is demonstrated for an isotropic array of a 10λ radius, for which a reference solution based on the analytical density-taper approach is available in the literature. Results show the capability of the proposed method to achieve a significant reduction of the array aperture (20%) with 25% less elements or 4dB lower peak side lobe level.

isophoric array

compressive sensing

sparse array antennas

Author

Carlo Bencivenni

Chalmers, Signals and Systems, Kommunikationssystem, informationsteori och antenner, Antennas

Marianna Ivashina

Chalmers, Signals and Systems, Kommunikationssystem, informationsteori och antenner, Antennas

Rob Maaskant

Chalmers, Signals and Systems, Kommunikationssystem, informationsteori och antenner, Antennas

2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Proceedings

761-762 7696089

Areas of Advance

Information and Communication Technology

Subject Categories

Telecommunications

Communication Systems

Signal Processing

DOI

10.1109/APS.2016.7696089

ISBN

978-1-5090-2886-3

More information

Created

10/7/2017