基于频带分割技术的宽带信号处理方法研究
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摘要
宽带信号的大容量高速数据率以及对信号实时处理性能方面的一些要求,使得直接对宽带信号进行处理受到软硬件各方面的限制。频带分割技术可以有效解决宽带信号处理方面的这些问题。
本文主要对应用频带分割技术来实现宽带信号处理的方法进行了研究。首先分析了可重构滤波器组设计的基本理论,设计出M通道可重构调制滤波器组。研究了宽带信号的子带脉冲压缩处理方法,给出了子带脉冲压缩系统的基本结构和性能仿真分析结果,并分析了滤波器阶数对系统性能的影响和系统实现的复杂度,将该系统用于实际工程中,对实测数据的处理结果证明了该系统的正确性和有效性。分析了宽带干扰下的自适应旁瓣相消系统,研究了基于子带分割方法的宽带干扰旁瓣相消技术,对子带处理结构进行了仿真,结果表明,子带滤波器组处理能有效增加主、辅助天线的信号相关性,从而提高系统的相消增益,并对通道幅相不一致性所引起的相消增益损失有一定的改善作用。
The data rate with high capacity and speed of wideband signal makes its real-time processing to be limited by hardware and software. The method about intersection of frequency spectrum techniques can solve such problems effectively.
In this paper, the method of wideband signal processing based on intersection of frequency spectrum techniques is studied primarily. An analysis of designing the reconstruction filterbanks is made and M-channel reconstruction filterbanks have been designed. The approach of subband pulse compression on wideband signal is researched, its basic structure and performance simulation results are given as well. The effect of the filter length on the system and the complexity for realizing it are discussed. It has been used in a practical project, the processing results of the measured datas from which proves its correctness and validity. Adaptive Sidelobe Cancellation System(ASLC) under wideband interfere surroundings is also discussed. Wideband interfere sidelobe cancellation based on spectrum partition techniques and the performance analysis are investigated. It is shown that ASLC using subband processing approach based on spectrum partition techniques can raise the correlation between main channel and accessory channel, so as to increase the cancellation gain. At the same time, it can weaken the aggravation of disparity of two paths characteristics about amplitude and phase to cancellation gain, improving the performance of the system.
本文主要对应用频带分割技术来实现宽带信号处理的方法进行了研究。首先分析了可重构滤波器组设计的基本理论,设计出M通道可重构调制滤波器组。研究了宽带信号的子带脉冲压缩处理方法,给出了子带脉冲压缩系统的基本结构和性能仿真分析结果,并分析了滤波器阶数对系统性能的影响和系统实现的复杂度,将该系统用于实际工程中,对实测数据的处理结果证明了该系统的正确性和有效性。分析了宽带干扰下的自适应旁瓣相消系统,研究了基于子带分割方法的宽带干扰旁瓣相消技术,对子带处理结构进行了仿真,结果表明,子带滤波器组处理能有效增加主、辅助天线的信号相关性,从而提高系统的相消增益,并对通道幅相不一致性所引起的相消增益损失有一定的改善作用。
The data rate with high capacity and speed of wideband signal makes its real-time processing to be limited by hardware and software. The method about intersection of frequency spectrum techniques can solve such problems effectively.
In this paper, the method of wideband signal processing based on intersection of frequency spectrum techniques is studied primarily. An analysis of designing the reconstruction filterbanks is made and M-channel reconstruction filterbanks have been designed. The approach of subband pulse compression on wideband signal is researched, its basic structure and performance simulation results are given as well. The effect of the filter length on the system and the complexity for realizing it are discussed. It has been used in a practical project, the processing results of the measured datas from which proves its correctness and validity. Adaptive Sidelobe Cancellation System(ASLC) under wideband interfere surroundings is also discussed. Wideband interfere sidelobe cancellation based on spectrum partition techniques and the performance analysis are investigated. It is shown that ASLC using subband processing approach based on spectrum partition techniques can raise the correlation between main channel and accessory channel, so as to increase the cancellation gain. At the same time, it can weaken the aggravation of disparity of two paths characteristics about amplitude and phase to cancellation gain, improving the performance of the system.
引文
[1] D. R. Weher. High-Resolution Radar. 2nd ed. Boston. MA: Artech House ,1995.
[2] Vaidyanathan. P.P. Multirate digital filters, filter banks, polyphase network, and application: A tutorial. Proc. IEEE ICASSP, January, 1990, Vol.78(1): pp.56~93.
[3]宗孔德.多抽样率信号处理.北京:清华大学出版社. 1996.
[4] Johnston J. D. A filter family designed for use in quadrature mirror filter banks[C]. IEEE ICASSP, 1980, pp.291~294.
[5] Smith M J T, Barnwell III, T. P. Exact reconstruction techniques for tree-structured subband coders. [J]. Proc. IEEE Int. Conf. Acoust. Speech Proc. 1986, pp.434~441.
[6] P. P. Vaidyanathan Vincent C.Liu. Classical sampling theorems in the context of multirate and polyphase digital filter bank structures. IEEE Trans on ASSP Sep. 1988, Vol.36,No.9.
[7] Vaidyanathan. P.P. Multirate. Digital filters, filter banks, polyphase network, and application:A tutorial. Proc. IEEE ICASSP, January, 1990,Vol.78 (1): pp.56~93.
[8] Koilpillai R D, Vaidyanathan P. P. Cosine-modulated filter FIR filter banks satisfying perfect reconstruction[J]. IEEE Trans. on Signal Processing, 1992, pp.770~783.
[9]向敬成、张明友编.雷达系统.电子工业出版社. 2001.
[10] Matthew.R.W, Timothy.N.D and James.P.R. Efficient design of oversampled NPR GDFT Filterbanks. IEEE Trans. SP, July, 2004,Vol. 52(7): pp.1947~1963.
[11]彭安金. PRQMF滤波器组理论及其在数字化技术中的应用研究.电子科技大学博士论文. 2003.
[12] P.P.Vaidyanathan, T.Q.Nguyen, Z.Doganata and T.Saramaki. Improved technique for design of perfect reconstruction FIR QMF banks with lossless polyphase matrix. IEEE Trans. ASSP, July, 1989 Vol.37: pp.1057~1061.
[13] P.Martin, F.Cr.Roldan and T.Saramaki. A new window for design of cosine modulated multirate systems. Proc. IEEE. ISCAS, 2004, pp.529~532.
[14] Ramstad.T.A and Tanem.J.P. Cosine-modulated analysis-synthesis filter bank with critical sampling and perfect reconstruction. Proc. IEEE ICASSP, April, 1991, Vol.3: pp.1789~1792.
[15] Labeau.F, Vandendorpe.L and Macq.B. Structures, factorizations, and designcriteria for oversampled paraunitary filterbanks yielding linear-phase filters. IEEE Trans. SP, November, 2000, Vol.48 (11): pp.3062~3071.
[16] J.Kliewer and A.Mertins. Oversampled cosine-modulated filterbanks with arbitrary system delay. IEEE Trans. SP, April, 1998,Vol. 46(4): pp.941~955.
[17] Daniel Rabinkin , Truong Nguyen. Optimal subband filterbank design for radar array signal processing with pulse compression. IEEE Signal Processing Magazine, 2000, (1), pp.13-19.
[18]宋秀峰、王飞、禹卫东.过采样子带脉冲压缩系统分析以及在SAR中的应用.中国科学院研究生院学报. Vol.25, No.5, 2008, 9.
[19]丁鹭飞、张平.雷达系统.西安电子科技大学出版社. 1984年.
[20]沈福民.自适应信号处理.西安电子科技大学出版社. 2002年4月.
[21]奚玮.相控阵雷达自适应旁旁瓣相消效果分析.现代电子技术. 2002年第5期.
[22]保铮.自适应天线旁瓣相消的几个问题.西北电讯工程学院学报. 1980年第4期.
[23] WARREN D. WHITE. Wideband Interference Cancellation in Adaptive Sidelobe Cancellers. IEEE Trans.Aerospace Electron. System, Nov.1983, vol.AES-19, no.6, pp.915.
[24] R.T.Compton. The relationship between tapped delay-Line and FFT processing in adaptive arrays. IEEE transactions on antennas and propagation, vol.36, No.1, January, 1988.
[25] ROSSI M,et al.Iterative constrained least squares design of near perfect reconstruction pseudo QMF banks[A].9th IEEE Canadian Conference on Electrical and Computer Engineering[C]. New York: IEEE Press, 1996, pp.766-769.
[26] Vaidynathan.P.P. Theory and design of M-channel maximally decimated quadrature mirror filters with arbitrary M, having the perfect-reconstruction property. IEEE Trans. ASSP, April, 1987, Vol.35 (4): pp.476~492.
[27]赵永波、水鹏朗、张守宏.基于子带滤波器组的宽带自适应旁瓣相消技术.电子学报. 2005年3月第3期.
[28]水鹏朗、保铮.基于频带分割的超宽带雷达脉冲压缩方法.电子学报. Vol.27, No.6, 1999, 6.
[29]陈隽永、徐继麟.超宽带雷达频带分割滤波器设计.系统工程与电子技术. Vol.23, No.2, 2001.
[30] Rabinkin D.V. Pulsone N. Subband-domain signal processing for radar array systems. Proc SPIE, 1999, 3807(6): pp.174-187.
[31] Cvetkovic Z,Vetterli M. Oversampled filter banks. IEEE Trans Signal Processing, 1998,46(5): pp.1245-1255.
[32] Matthew.R.W, Timothy.N.D and James.P.R. Efficient design of oversampled NPR GDFT Filterbanks. IEEE Trans. SP, July, 2004, Vol. 52(7): pp.1947~1963.
[33] Ming Li, Xiaojuan Shi, and Shunjun Wu. Design of UWB Radar Receive Based on Intersection of FrequencySpectrum. In 2006 CIE International Conference on Radar Proceedings, October 16-19, 2006, pp. 432-436.
[34]张子敬、焦李成. M带余弦调制滤波器组的设计.电子学报. Vol.29(1): pp.84~86, 2001,1.
[35]石光明.子带滤波器组的设计方法和应用.西安电子科技大学博士论文. 2001,12.
[36]黄巍.宽带雷达实时信号处理技术研究.电子科技大学博士论文. 2004,10.
[37]傅有光、唐纬、张倩.通道间幅相差异对旁瓣相消性能的影响与解决方法.现代雷达.第6期. 2000年12月.
[38]陈仓.大型阵列天线旁瓣相消研究.西安电子科技大学硕士论文. 2010,6.
[39]石晓娟.基于多相滤波的宽带信号数字化接收技术.西安电子科技大学硕士论文. 2007,1.
[40]李明.机载宽带雷达信号处理若干问题研究.西安电子科技大学博士论文. 2007,2.
[2] Vaidyanathan. P.P. Multirate digital filters, filter banks, polyphase network, and application: A tutorial. Proc. IEEE ICASSP, January, 1990, Vol.78(1): pp.56~93.
[3]宗孔德.多抽样率信号处理.北京:清华大学出版社. 1996.
[4] Johnston J. D. A filter family designed for use in quadrature mirror filter banks[C]. IEEE ICASSP, 1980, pp.291~294.
[5] Smith M J T, Barnwell III, T. P. Exact reconstruction techniques for tree-structured subband coders. [J]. Proc. IEEE Int. Conf. Acoust. Speech Proc. 1986, pp.434~441.
[6] P. P. Vaidyanathan Vincent C.Liu. Classical sampling theorems in the context of multirate and polyphase digital filter bank structures. IEEE Trans on ASSP Sep. 1988, Vol.36,No.9.
[7] Vaidyanathan. P.P. Multirate. Digital filters, filter banks, polyphase network, and application:A tutorial. Proc. IEEE ICASSP, January, 1990,Vol.78 (1): pp.56~93.
[8] Koilpillai R D, Vaidyanathan P. P. Cosine-modulated filter FIR filter banks satisfying perfect reconstruction[J]. IEEE Trans. on Signal Processing, 1992, pp.770~783.
[9]向敬成、张明友编.雷达系统.电子工业出版社. 2001.
[10] Matthew.R.W, Timothy.N.D and James.P.R. Efficient design of oversampled NPR GDFT Filterbanks. IEEE Trans. SP, July, 2004,Vol. 52(7): pp.1947~1963.
[11]彭安金. PRQMF滤波器组理论及其在数字化技术中的应用研究.电子科技大学博士论文. 2003.
[12] P.P.Vaidyanathan, T.Q.Nguyen, Z.Doganata and T.Saramaki. Improved technique for design of perfect reconstruction FIR QMF banks with lossless polyphase matrix. IEEE Trans. ASSP, July, 1989 Vol.37: pp.1057~1061.
[13] P.Martin, F.Cr.Roldan and T.Saramaki. A new window for design of cosine modulated multirate systems. Proc. IEEE. ISCAS, 2004, pp.529~532.
[14] Ramstad.T.A and Tanem.J.P. Cosine-modulated analysis-synthesis filter bank with critical sampling and perfect reconstruction. Proc. IEEE ICASSP, April, 1991, Vol.3: pp.1789~1792.
[15] Labeau.F, Vandendorpe.L and Macq.B. Structures, factorizations, and designcriteria for oversampled paraunitary filterbanks yielding linear-phase filters. IEEE Trans. SP, November, 2000, Vol.48 (11): pp.3062~3071.
[16] J.Kliewer and A.Mertins. Oversampled cosine-modulated filterbanks with arbitrary system delay. IEEE Trans. SP, April, 1998,Vol. 46(4): pp.941~955.
[17] Daniel Rabinkin , Truong Nguyen. Optimal subband filterbank design for radar array signal processing with pulse compression. IEEE Signal Processing Magazine, 2000, (1), pp.13-19.
[18]宋秀峰、王飞、禹卫东.过采样子带脉冲压缩系统分析以及在SAR中的应用.中国科学院研究生院学报. Vol.25, No.5, 2008, 9.
[19]丁鹭飞、张平.雷达系统.西安电子科技大学出版社. 1984年.
[20]沈福民.自适应信号处理.西安电子科技大学出版社. 2002年4月.
[21]奚玮.相控阵雷达自适应旁旁瓣相消效果分析.现代电子技术. 2002年第5期.
[22]保铮.自适应天线旁瓣相消的几个问题.西北电讯工程学院学报. 1980年第4期.
[23] WARREN D. WHITE. Wideband Interference Cancellation in Adaptive Sidelobe Cancellers. IEEE Trans.Aerospace Electron. System, Nov.1983, vol.AES-19, no.6, pp.915.
[24] R.T.Compton. The relationship between tapped delay-Line and FFT processing in adaptive arrays. IEEE transactions on antennas and propagation, vol.36, No.1, January, 1988.
[25] ROSSI M,et al.Iterative constrained least squares design of near perfect reconstruction pseudo QMF banks[A].9th IEEE Canadian Conference on Electrical and Computer Engineering[C]. New York: IEEE Press, 1996, pp.766-769.
[26] Vaidynathan.P.P. Theory and design of M-channel maximally decimated quadrature mirror filters with arbitrary M, having the perfect-reconstruction property. IEEE Trans. ASSP, April, 1987, Vol.35 (4): pp.476~492.
[27]赵永波、水鹏朗、张守宏.基于子带滤波器组的宽带自适应旁瓣相消技术.电子学报. 2005年3月第3期.
[28]水鹏朗、保铮.基于频带分割的超宽带雷达脉冲压缩方法.电子学报. Vol.27, No.6, 1999, 6.
[29]陈隽永、徐继麟.超宽带雷达频带分割滤波器设计.系统工程与电子技术. Vol.23, No.2, 2001.
[30] Rabinkin D.V. Pulsone N. Subband-domain signal processing for radar array systems. Proc SPIE, 1999, 3807(6): pp.174-187.
[31] Cvetkovic Z,Vetterli M. Oversampled filter banks. IEEE Trans Signal Processing, 1998,46(5): pp.1245-1255.
[32] Matthew.R.W, Timothy.N.D and James.P.R. Efficient design of oversampled NPR GDFT Filterbanks. IEEE Trans. SP, July, 2004, Vol. 52(7): pp.1947~1963.
[33] Ming Li, Xiaojuan Shi, and Shunjun Wu. Design of UWB Radar Receive Based on Intersection of FrequencySpectrum. In 2006 CIE International Conference on Radar Proceedings, October 16-19, 2006, pp. 432-436.
[34]张子敬、焦李成. M带余弦调制滤波器组的设计.电子学报. Vol.29(1): pp.84~86, 2001,1.
[35]石光明.子带滤波器组的设计方法和应用.西安电子科技大学博士论文. 2001,12.
[36]黄巍.宽带雷达实时信号处理技术研究.电子科技大学博士论文. 2004,10.
[37]傅有光、唐纬、张倩.通道间幅相差异对旁瓣相消性能的影响与解决方法.现代雷达.第6期. 2000年12月.
[38]陈仓.大型阵列天线旁瓣相消研究.西安电子科技大学硕士论文. 2010,6.
[39]石晓娟.基于多相滤波的宽带信号数字化接收技术.西安电子科技大学硕士论文. 2007,1.
[40]李明.机载宽带雷达信号处理若干问题研究.西安电子科技大学博士论文. 2007,2.