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Channel characterization of a dual-band dual-polarized SAR with digital beamforming

Published online by Cambridge University Press:  01 June 2020

Emilio Arnieri*
Affiliation:
DIMES, University of Calabria, Calabria, Italy
Luigi Boccia
Affiliation:
DIMES, University of Calabria, Calabria, Italy
Giandomenico Amendola
Affiliation:
DIMES, University of Calabria, Calabria, Italy
Srdjan Glisic
Affiliation:
Silicon Radar GmbH, 15236Frankfurt (Oder), Germany
Chun-Xu Mao
Affiliation:
University of Surrey, Guildford, SurreyGU2 7XH, United Kingdom School of Engineering and Digital Arts, University of Kent, Canterbury, UK
Steven (Shichang) Gao
Affiliation:
School of Engineering and Digital Arts, University of Kent, Canterbury, UK
Tobias Rommel
Affiliation:
Microwaves and Radar Institute, German Aerospace Center (DLR), 82234Wessling, Germany
Piotr Penkala
Affiliation:
Evatronix S.A. Bielsko-Biała, 43-300 Bielsko-Biała, Poland
Milos Krstic
Affiliation:
IHP-Leibniz-Institut für innovative Mikroelektronik, 15236Frankfurt (Oder), Germany University of Potsdam, 14482Potsdam, Germany
Uroschanit Yodprasit
Affiliation:
Silicon Radar GmbH, 15236Frankfurt (Oder), Germany
Anselm Ho
Affiliation:
Innovative Solutions In Space BV, 629 JD, Delft, Netherlands
Oliver Schrape
Affiliation:
IHP-Leibniz-Institut für innovative Mikroelektronik, 15236Frankfurt (Oder), Germany
Marwan Younis
Affiliation:
Microwaves and Radar Institute, German Aerospace Center (DLR), 82234Wessling, Germany
*
Author for correspondence: Emilio Arnieri, E-mail: emilio.arnieri@unical.it

Abstract

This paper presents the integration and channel characterization of a highly integrated dual-band digital beamforming space-borne synthetic aperture radar (SAR) receiver. The proposed SAR sensor is a low-cost, lightweight, low-power consumption, and dual-band (X/Ka) dual-polarized module ready for the next-generation space-borne SAR missions. In previous works, by the authors, the design and experimental characterization of each sub-system was already presented and discussed. This work expands upon the previous characterization by providing an exhaustive experimental assessment of the fully integrated system. As it will be shown, the proposed tests were used to validate all the instrument channels in a set-up where the SAR sensor was illuminated by an external source minim the ground reflected waves. Test results demonstrate how the system channels are properly operating allowing the reception of the input signals and their processing in the digital domain. The possibility to easily implement a calibration procedure has also been validated to equalize, in the digital domain, the unavoidable amplitude differences between the different channels.

Type
Research Paper
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2020

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Channel characterization of a dual-band dual-polarized SAR with digital beamforming
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