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Compensation of analog imperfections In a Ka-band FMCW SAR

Abstract : This paper deals with the compensation of analog imperfections in a Ka-Band FMCW SAR. Due to the presence of phase distortion in the up-conversion and down conversion block, we demonstrate that the calibration of the VCO based on a reference beat signal is range-limited. We propose a post-processing method to compensate the residual sinusoidal nonlinearities of the VCO characteristic as well as the phase distortion coming from the up-conversion and down-conversion block. Processing of SAR data acquisition demonstrates the efficiency of the method.
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https://hal-supelec.archives-ouvertes.fr/hal-00752229
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Submitted on : Thursday, November 15, 2012 - 10:52:34 AM
Last modification on : Friday, June 26, 2020 - 2:34:02 PM
Long-term archiving on: : Saturday, February 16, 2013 - 3:42:29 AM

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Emilie Avignon, Weixian Liu, Hongchuan Feng, Sylvain Azarian, Marc Lesturgie, et al.. Compensation of analog imperfections In a Ka-band FMCW SAR. 9th European Conference on Synthetic Aperture Radar (EUSAR 2012), Apr 2012, Nuremberg, Germany. pp.60-63. ⟨hal-00752229⟩

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