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Interleaved OFDM Radar Signals for Simultaneous Polarimetric Measurements

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6 Author(s)
Zongbo Wang ; Dalian Univ. of Technol., Dalian, China ; Tigrek, F. ; Krasnov, O. ; Van Der Zwan, F.
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A novel pair of mutually-orthogonal radar waveforms is proposed for simultaneous polarimetric measurements (SPM). The proposed waveform pair exploits the orthogonality features between different subcarriers within a single orthogonal frequency division multiplexing (OFDM) chip, and is called interleaved OFDM (I-OFDM). With I-OFDM signals the isolation limitation defined by the bandwidth time (BT) product for frequently used waveform pairs like linear frequency modulated (LFM) and phase-code modulated (PCM) signals, can be overcome. The performance features of I-OFDM signals are theoretically analyzed; the application of I-OFDM signals and the corresponding signal processing scheme in SPM are presented. A significant increase of the polarimetric measurements efficiency by utilization of the proposed I-OFDM signals has been verified by experiments using an operational radar system.

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Aerospace and Electronic Systems, IEEE Transactions on  (Volume:48 ,  Issue: 3 )