Karaman, MustafaKöymen, HayrettinAtalar, AbdullahO'Donnell, M.2016-02-082016-02-0819931051-0117http://hdl.handle.net/11693/27799Date of Conference: 31 Ocober-3 November 1993Conference Name: 1993 IEEE Ultrasonics SymposiumPhase aberration correction based on time delay estimation via minimization of sum of absolute difference (SAD) between radio frequency (RF) signals of neighboring elements is studied in the presence of missing elements. To examine the influence of inactive elements, phase estimation error is measured for various combinations of different number of missing elements, aberration level, and SNR. The measurements are performed on an experimental RF data set. Aberration delays of missing elements are interpolated using the phase estimate between the nearest active elements. The B-scan images are reconstructed for qualitative examination.EnglishAberrationsAdaptive systemsComputational methodsError analysisError correctionImage qualityImage reconstructionInterpolationMathematical modelsParameter estimationScanningSignal to noise ratioInactive array elementsPhase aberration correctionUltrasonic imagingConference Paper10.1109/ULTSYM.1993.339585