EMISAR: an absolutely calibrated polarimetric L- and C-band SAR

E.L. Christensen, N. Skou, J. Dall, K.W. Woelders, J.H. Jorgensen, J. Granholm, S.N. Madsen
1998 IEEE Transactions on Geoscience and Remote Sensing  
EMISAR is a high-resolution (2 2 2 2 2 m), fully polarimetric, dual-frequency (L-and C-band) synthetic aperture radar (SAR) system designed for remote-sensing applications. The SAR is operated at high altitudes on a Gulfstream G-3 jet aircraft. The system is very well calibrated and has low sidelobes and low cross-polar contamination. Digital technology has been utilized to realize a flexible and highly stable radar with variable resolution, swath width, and imaging geometry. Thermal control
more » ... several calibration loops have been built into the system to ensure system stability and absolute calibration. Accurately measured antenna gains and radiation patterns are included in the calibration. The processing system is developed to support data calibration, which is the key to most of the current applications. Recent interferometric enhancements are important for many scientific applications.
doi:10.1109/36.729356 fatcat:cba7wgphtjdyhohf3isaiy5qlu