Digital receiving technology of multi-bandwidth synthetic aperture radar system based on FPGA

doi:10.7523/j.issn.2095-6134.2010.6.018

Abstract

Abstract:

Considering the problems in traditional multi-bandwidth synthetic aperture radar (SAR) system, such as too many filters and sampling clocks, we present a new digital processing scheme. This scheme needs only one highest frequency sampling clock to obtain the discrete data; other data with lower frequencies can be acquired by interpolation; and digital filter fulfills the function of filtering signals with different bandwidths. This technique simplifies the design of the SAR system and improves the reliability. The architecture of the algorithm, the simulation results, and the implementation of the algorithm based on FPGA are expounded in detail.

Key words: synthetic aperture radar, multi-bandwidth system, digital filter, interpolation operation

CLC Number:

TN957

HE Bin, ZHANG Zhi-Min. Digital receiving technology of multi-bandwidth synthetic aperture radar system based on FPGA[J]. , 2010, 27(6): 853-858.

References

[1] Cumming I G, Wong F H. 合成孔径雷达成像-算法与实现
[M]. 洪文,胡东辉,等译.北京:电子工业出版社, 2007: 31-32,36-38,86- 87.

[2] Yeo T S, Zhang C B, Lu Y H, et al. Development of a SAR digital system
[J]. IEEE AES Magazine, 1999, 14(5): 37- 41.

[3] Guo Z, Ding C B, Wu Y R. A real-time data processing system for high resolution airborne synthetic aperture radar
[J]. Journal of Electronics and Information Technology, 2004, 26(7): 1120-1125(in Chinese). 郭智, 丁赤飚, 吴一戎. 一种高分辨率机载SAR实时数据处理系统设计
[J]. 电子与信息学报, 2004, 26(7): 1120-1125.

[4] Li Z S, Yu W D. FPGA implementation of pre-processor for spaceborne SAR imaging processor
[J]. Modern Radar, 2007,29(2):38- 40(in Chinese). 李早社,禹卫东.星载SAR实时成像处理器预处理器的FPGA实现
[J]. 现代雷达,2007,29(2):38- 40.

[5] Steiglitz K, Parks T W, Kaiser J F. METWOR:a constraint-based FIR filter design program
[J]. IEEE Trans Signal Processing, 1992, 40:1901-1909.

[6] Kaiser J F.Nonrecursive digital filter design using the I0-sinh window function // Proc 1974 IEEE Symp, 1974: 20-23.

[7] Wang Y, Zhang Z M, Deng Y K. Analysis of quantization errors in real-time SAR azimuth preprocessing
[J]. Modern Radar, 2006, 28(2):36-39(in Chinese). 王宇,张志敏,邓云凯. SAR实时方位预处理中的量化误差分析
[J]. 现代雷达,2006,28(2):36-39.

[8] Yu W D, Wu S M. Comparision of several interpolation algorithms in range-Doppler method
[J]. Journal of Electronics and Information Technology,2001,23(3):308-312(in Chinese). 禹卫东,吴淑梅. 距离-多普勒方法中的几种插值算法比较
[J]. 电子与信息学报,2001,23(3):308-312.

[9] 郑君里,应启珩,杨为理.信号与系统
[M].北京:高等教育出版社,2004:138-143.

[10] 袁孝康. 星载合成孔径雷达导论
[M]. 北京: 国防工业出版社, 2003: 322-325.

[11] Sathaye S, Ramakrishnan K, Yang H. FIFO Design for a High-Speed Network Interface // IEEE Local Computer Networks Conference. 1994: 2-11.

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