Title :
A vehicle based SFCW SAR for differential interferometry
Author :
Lu, Biying ; Zhang, Xiang ; Song, Qian ; Zhou, Zhimin ; Wang, Jian
Author_Institution :
School of Electronic Science and Engineering, NUDT, Changsha 410073, P.R. China
Abstract :
Ground based synthetic aperture radar (SAR) interferometry has already demonstrated its effectiveness in detecting manmade structures deformation and slow moving objects. A vehicle based stepped frequency continuous wave (SFCW) radar for differential interferometry has been developed in National University of Defense Technology. In this paper, the system characteristic and performance together with the results of displacement measure experiments were described. Thanking to the real-time calibration technology, the high speed SFCW synthesizer and the novel antenna array, the system can provide images at a minimum interval of 50ms with about 0.5mm displacement sensitivity, 0.3m range resolution, and 28.57 mrad azimuth angular resolution.
Keywords :
Displacement measurement; Interferometry; Radar antennas; Radar imaging; Synthetic aperture radar; Time frequency analysis; differential interferometry; stepped frequency continuous wave (SFCW); synthetic aperture radar (SAR);
Conference_Titel :
Synthetic Aperture Radar (APSAR), 2011 3rd International Asia-Pacific Conference on
Conference_Location :
Seoul, Korea (South)
Print_ISBN :
978-1-4577-1351-4
