Calibration of multi-channel spaceborne SAR

Challenges and strategies

Conference paper (2014)

Authors

Marwan Younis Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)

Christopher Laux Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)

Noora Al-Kahachi Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)

Paco López-Dekker Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)

Gerhard Krieger Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)

Alberto Moreira Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)

Research Group

Mathematical Geodesy and Positioning () (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

Instrument calibration has ever been essential to synthetic aperture radar. This paper reviews the calibration functionality of current state-of-the-art spaceborne SAR and then proceeds to suggest calibration strategies for future SAR systems. These systems will incorporate multi-channel digital beamforming capabilities which offer new opportunities but also challenges for digital calibration. At the same time, the increased complexity of instrument calibration can not be extrapolated to future systems. This requires a reconsideration of the calibration strategy for spaceborne SAR. The paper is seen as a step in this direction.