X. Zhang, Y. Zhang, and J. Jiang (PRC)
High-resolution Radar, Spotlight SAR, Aspect angle, General Synthetic Aperture Processing,
The reason why spotlight-SAR can get higher spatial resolution image than stripmap-SAR does is due to its wider viewing aspect angle than that of stripmap-SAR. This paper presents a method of combining two observations on the same target at two different angles, so as to get a wider viewing aspect angle than that of single observation; each observation is completed in spotlight processing. By doing so, a much higher spatial resolution has been obtained. Computer simulation is presented to show the validity of our method.
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