Now showing items 1-4 of 4

    • Autofocused spotlight SAR image reconstruction of off-grid sparse scenes 

      Camlıca, S.; Gurbuz, A. C.; Arıkan, Orhan (Institute of Electrical and Electronics Engineers Inc., 2017)
      Synthetic aperture radar (SAR) has significant role in remote sensing. Phase errors due to uncompensated platform motion, measurement model mismatch, and measurement noise can cause degradations in SAR image reconstruction. ...
    • Online calibration of modulated wideband converter 

      Alp, Y. K.; Korucu, A. B.; Karabacak, A. T.; Gürbüz, A. C.; Arıkan, Orhan (IEEE, 2016)
      In this work, we propose a new method for online calibration of recently proposed Modulated Wideband Converter (MWC), which digitizes wideband sparse signals below the Nyquist limit without loss of information by using ...
    • Sparsity based off-grid blind sensor calibration 

      Çamlıca, S.; Yetik, I. S.; Arıkan, Orhan (Elsevier, 2018)
      Compressive Sensing (CS) based techniques generally discretize the signal space and assume that the signal has a sparse support restricted on the discretized grid points. This restriction of representing the signal on a ...
    • Sub-band equalization of modulated wideband converter for improved dynamic range performance 

      Korucu, A. B.; Alp, Y. K.; Gök, Gökhan; Arıkan, Orhan (IEEE, 2017)
      In this work, we propose a new method to improve the dynamic range performance of the Modulated Wideband Converter (MWC), which is multi-channel sampling system for digitizing wideband sparse signals below the Nyquist limit ...