Real-time Image Formation for Airborne High Resolution Spotlight SAR Based on FPGA

Zhou  Fang; Tang  Yu; Zhang  Jia-Jia; Xing  Meng-Dao; Wang  Yu

doi:10.3724/SP.J.1146.2010.00957

Volume 33 Issue 5

Jun. 2011

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Article Navigation > Journal of Electronics & Information Technology > 2011 > 33(5): 1248-1252

Zhou Fang, Tang Yu, Zhang Jia-Jia, Xing Meng-Dao, Wang Yu. Real-time Image Formation for Airborne High Resolution Spotlight SAR Based on FPGA[J]. Journal of Electronics & Information Technology, 2011, 33(5): 1248-1252. doi: 10.3724/SP.J.1146.2010.00957

Citation:

Zhou Fang, Tang Yu, Zhang Jia-Jia, Xing Meng-Dao, Wang Yu. Real-time Image Formation for Airborne High Resolution Spotlight SAR Based on FPGA[J]. Journal of Electronics & Information Technology, 2011, 33(5): 1248-1252. doi: 10.3724/SP.J.1146.2010.00957

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Real-time Image Formation for Airborne High Resolution Spotlight SAR Based on FPGA

doi: 10.3724/SP.J.1146.2010.00957

Zhou Fang^{* 唐禹张佳佳邢孟道王玉
,},
Tang Yu,
Zhang Jia-Jia,
Xing Meng-Dao,
Wang Yu

Received Date: 2010-09-03
Rev Recd Date: 2010-12-09
Publish Date: 2011-05-19

Abstract

Abstract

This paper designs and realizes a real-time image processor for SAR based on Field Programmable Gate Arrays (FPGA). The system is suitable for high resolution airborne spotlight mode SAR. The scheme applies the Polar Format Algorithm (PFA) first. Then the motion error phase is estimated and compensated in azimuth wavenumber domain. In this paper, the design approaches and the hardware system architecture are given and the resource usage, processing speed and image result are analyzed in detail. The real-time experiment results show that the system can process 1024 MB SAR raw data within 11 s, when the FPGA processing units work at 100 MHz. The good experimental image also proves the validity and reliability of the proposed system.
- Spotlight SAR,
- Polar Format Algorithm (PFA),
- Motion compensation,
- Real-time imaging,
- Field Programmable Gate Array (FPGA)

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References(1)

References

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