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Modifications of active phased antenna arrays near-field diagnosis method based on compressive sensing

Published online by Cambridge University Press:  18 July 2019

Grigory Kuznetsov Open the ORCID record for Grigory Kuznetsov [Opens in a new window] ,
Vladimir Temchenko ,
Maxim Miloserdov  and
Dmitry Voskresenskiy
Grigory Kuznetsov*
Affiliation:
Research Institute of Precision Instruments, Moscow, Russia
Vladimir Temchenko
Affiliation:
Department of Radioelectronics, Moscow Aviation Institute, Moscow, Russia
Maxim Miloserdov
Affiliation:
Research Institute of Precision Instruments, Moscow, Russia
Dmitry Voskresenskiy
Affiliation:
Department of Radioelectronics, Moscow Aviation Institute, Moscow, Russia
*
Author for correspondence: Grigory Kuznetsov, E-mail: [email protected]
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Abstract

This paper presents two modifications of compressive sensing (CS)-based approach applied to the near-field diagnosis of active phased arrays. CS-based antenna array diagnosis allows a significant reduction of measurement time, which is crucial for the characterization of electrically large active antenna arrays, e.g. used in synthetic aperture radar. However, practical implementation of this method is limited by two factors: first, it is sensitive to thermal instabilities of the array under test, and second, excitation reconstruction accuracy strongly depends on the accuracy of the elements of the measurement matrix. First proposed modification allows taking into account of thermal instability of the array by using an iterative ℓ1-minimization procedure. The second modification increases the accuracy of reconstruction using several simple additional measurements.

Keywords

Antenna arraydiagnosticscompressive sensinginverse problemthermal instability
Type
MIKON 2018
Information
International Journal of Microwave and Wireless Technologies , Volume 11 , Special Issue 7: MIKON 2018 / EuMW 2018 (Part II) , September 2019 , pp. 568 - 576
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2019 

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