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A Novel OFDM Chirp Waveform Scheme for Use of Multiple Transmitters in SAR

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4 Author(s)
Jung-Hyo Kim ; Microwaves & Radar Inst., German Aerosp. Center (DLR), Oberpfaffenhofen, Germany ; Younis, M. ; Moreira, A. ; Wiesbeck, W.

In this letter, we present a new waveform technique for the use of multiple transmitters in synthetic aperture radar (SAR) data acquisition. This approach is based on the principle of the orthogonal-frequency-division-multiplexing technique. Unlike multiple subband approaches, the proposed scheme allows the generation of multiple orthogonal waveforms on common spectral support and thereby enables to exploit the full bandwidth for each waveform. This letter introduces the modulation and the demodulation processing in regard to typical spaceborne SAR receive signals. The proposed processing techniques are verified by a simulation for the case of pointlike targets.

Published in:

Geoscience and Remote Sensing Letters, IEEE  (Volume:10 ,  Issue: 3 )