Digital beamforming SAR interferometer based on a multi-beam reflectarray antenna

Conference paper (2014)

Authors

A. Patyuchenko Deutsches Zentrum für Luft- und Raumfahrt (DLR)
Carolina Tienda Deutsches Zentrum für Luft- und Raumfahrt (DLR)
Marwan Younis Deutsches Zentrum für Luft- und Raumfahrt (DLR)
Sebastian Bertl Deutsches Zentrum für Luft- und Raumfahrt (DLR)
Paco López-Dekker Deutsches Zentrum für Luft- und Raumfahrt (DLR)
Gerhard Krieger Deutsches Zentrum für Luft- und Raumfahrt (DLR)
Research Group
Mathematical Geodesy and Positioning (CEG) (TU Delft)
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Published Date

2014

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Geoscience and Remote Sensing

Research Group

Mathematical Geodesy and Positioning

Abstract

This paper presents a novel concept of a spaceborne Digital Beamforming (DBF) Synthetic Aperture Radar (SAR) based on a multi-beam reflectarray antenna. The proposed solution offers a number of advantages compared to more conventional DBF SAR systems using planar arrays or reflector antennas. The paper focuses on the spaceborne DBF SAR and discusses its architecture, system parameters and an imaging scenario. A reflectarray antenna design to be used in a combination with the considered imaging platform is presented in the paper. The reflectarray model is used to estimate DBF SAR performance characteristics discussed in the final part of the paper.