On direct digital generation of IF pulse compression signals

Si Qiang; Xiang Jingcheng

Volume 24 Issue 1

Jan. 2002

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Si Qiang, Xiang Jingcheng . On direct digital generation of IF pulse compression signals[J]. Journal of Electronics & Information Technology, 2002, 24(1): 19-24.

Citation:

Si Qiang, Xiang Jingcheng . On direct digital generation of IF pulse compression signals[J]. Journal of Electronics & Information Technology, 2002, 24(1): 19-24.

Si Qiang, Xiang Jingcheng . On direct digital generation of IF pulse compression signals[J]. Journal of Electronics & Information Technology, 2002, 24(1): 19-24.

Citation:

Si Qiang, Xiang Jingcheng . On direct digital generation of IF pulse compression signals[J]. Journal of Electronics & Information Technology, 2002, 24(1): 19-24.

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On direct digital generation of IF pulse compression signals

Received Date: 2000-01-12
Rev Recd Date: 2000-07-10
Publish Date: 2002-01-19

Abstract

Abstract

In this paper, a method of direct digital generation of intermediate frequency(IF) pulse compression signals is proposed, and the hardware architecture is also presented. Some key issues are analyzed quantitatively. Based on these, a generation system is implemented, which is applicable to generate six kinds of LFM, NLFM waveforms. The designed IF reaches 15MHz and bandwidth reaches 1MHz with timewidth equal to or less than 300s. The measuring results of SFDR and noise are all below-68dB, which show that the performances of the system can meet the needs of practical engineering application.

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References(1)

References

H.D. Griffiths, W. J. Bradford, Digital generation of high time-bandwidth product linear FM waveforms for radar alt imeters, IEE Proc.-F, 1992, 139(2), 160-169.[2]S.P. Caldwell, M. M. Driscoll, W. S. Foley, J. T. Haynes, T. D. Merrell, Recent advances in exciter and waveform generator technology, IEEE NRC, 1993, 40-45.[3]蔡英杰,向敬成,宽带LFM/NLFM信号及其产生,系统工程与电子技术,1999(21),36-40. ［4］张厥盛,曹丽娜,锁相与频率合成技术,成都,电子科技大学出版社,1995,140-160.[4]林茂庸,柯有安,雷达信号理论,北京,国防工业出版社,1984,第五、六、九章.

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