Title :
Anomalous propagation limitations to high-resolution SAR performance
Author :
Denny, Mark ; Scott, Iain
Author_Institution :
BAE Syst., Edinburgh, UK
Abstract :
We show that the performance of future high-resolution SAR modes will be limited by anomalous propagation effects, rather than by platform measurement errors, or focusing algorithm limitations, or RF wavelength. This is established by calculating the phase history distortions that result from specified atmospheric temperature profiles. Simulations show the effects of such phase distortions upon SAR images.
Keywords :
atmospheric electromagnetic wave propagation; atmospheric temperature; image resolution; radar imaging; radar resolution; radiowave propagation; refractive index; synthetic aperture radar; SAR images; anomalous propagation limitations; atmospheric refractive index; atmospheric temperature profiles; flat earth approximation; high-resolution SAR performance; linear horizontal temperature gradient; meteorological effects; phase history distortions; simulations; temperature gradients; weather fronts; Atmosphere; Atmospheric modeling; Atmospheric waves; Earth; Geometry; History; Image analysis; Phase distortion; Refractive index; Temperature;
Conference_Titel :
Radar Conference, 2002. Proceedings of the IEEE
Print_ISBN :
0-7803-7357-X
DOI :
10.1109/NRC.2002.999727
