Spotlight-mode SAR data focusing using a modified wavenumber domain algorithm. - Yu Wang 031; Otmar Loffeld; Stefan Knedlik (IGARSS, 2007)

Phase Unwrapping for SAR Interferometry - A Data Fusion Approach by Kalman Filtering. - Otmar Loffeld; Holger Nies; Stefan Knedlik; Yu Wang 031 (IEEE Trans. Geosci. Remote. Sens., 2008)