Application of synthetic bandwidth approach in SAR polar format algorithm using the deramp technique

作者：Nie X^*; Zhu D Y; Zhu Z D

来源：Progress in Electromagnetics Research-Pier, 2008, 80: 447-460.

DOI：10.2528/PIER07121409

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 signal processing flows are investigated in detail. The presented approach is validated by point target simulation.

• 出版日期2008
• 单位南京航空航天大学