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Approach to velocity and acceleration measurement in the Bi-Directional SAR imaging mode

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9 Author(s)
Josef Mittermayer ; German Aerospace Center (DLR), Microwaves and Radar Institute, D-82230 Oberpfaffenhofen, Germany ; Pau Prats ; Steffen Wollstadt ; Stefan Baumgartner
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This paper presents an initial analysis of the possibilities for velocity and acceleration measurement with the Bi-Directional SAR imaging mode (BiDi). It comprises single satellite single path acquisitions as well as a constellation of two satellites. The translational velocity components into azimuth and range directions are simulated. A BiDi approach for measuring the azimuth velocity from one satellite with one receiving channel is proposed. Image examples acquired with the TerraSAR-X (TSX) and TanDEM-X (TDX) satellites show velocity and acceleration effects on ships and the proposed BiDi velocity approach is verified. Interferometric fringes were observed on anchoring ships. A first approach into the understanding of rotational effects was achieved by simulation of rotational fringes.

Published in:

2012 IEEE International Geoscience and Remote Sensing Symposium

Date of Conference:

22-27 July 2012