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Progress In Electromagnetics Research
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APPLICATION OF SYNTHETIC BANDWIDTH APPROACH IN SAR POLAR FORMAT ALGORITHM USING THE DERAMP TECHNIQUE

By X. Nie, D.-Y. Zhu, and Z.-D. Zhu

Full Article PDF (345 KB)

Abstract:
The problem of wide bandwidth management in ultra-high resolution SAR systems can be solved by adopting stepped chirps and applying synthetic bandwidth approach. However, high resolution SAR image formation is a non-separable 2-D impulse compression processing, so the synthetic bandwidth procedure should be modified correspondingly with the image formation algorithm adopted. This paper demonstrates the application of synthetic bandwidth approach in SAR Polar Format Algorithm (PFA) using the deramp technique. The problem of motion compensation between the sub-pulses within a burst is discussed, and the signalpro cessing flows are investigated in detail. The presented approach is validated by point target simulation.

Citation:
X. Nie, D.-Y. Zhu, and Z.-D. Zhu, "Application of Synthetic Bandwidth Approach in SAR Polar Format Algorithm Using the Deramp Technique," Progress In Electromagnetics Research, Vol. 80, 447-460, 2008.
doi:10.2528/PIER07121409
http://www.jpier.org/PIER/pier.php?paper=07121409

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