Abstract
With the development of satellite load and very large scale integrated (VLSI) circuit technology, spaceborne real-time synthetic aperture radar (SAR) imaging systems have become a solution for rapid response to hazards. Through analyzing the algorithm pipeline flow as well as introducing the storage-computation model, a balanced and high-efficiency 2-D data access technology based on cross-mapping data storage method has been achieved to suit the large point processing for real-time spaceborne SAR system. A prototype based on NetFPGA-SUME board with Xilinx XC7VX690T is given to verify the performance of the proposed design. Taking Stripmap SAR imaging of 16384 * 16384 granularity raw data (5 m resolution, 25 km width) as an example, the imaging based on chirp scaling algorithm takes 6.63 s, which is better than some other real-time processing methods.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China under Grant 31727901, and the Hundred Leading Talent Project of Beijing Science and Technology under Grant Z141101001514005.
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Sun, T., Li, B., Liu, X., Xie, Y. (2020). An FPGA-Based Balanced and High-Efficiency Two-Dimensional Data Access Technology for Real-Time Spaceborne SAR. In: Liang, Q., Liu, X., Na, Z., Wang, W., Mu, J., Zhang, B. (eds) Communications, Signal Processing, and Systems. CSPS 2018. Lecture Notes in Electrical Engineering, vol 517. Springer, Singapore. https://doi.org/10.1007/978-981-13-6508-9_87
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DOI: https://doi.org/10.1007/978-981-13-6508-9_87
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