二相编码雷达信号的旁瓣抑制和扩展多普勒容限研究
SIDELOBE SUPPRESSION AND DOPPLER-TOLERANCE IMPROVEMENT OF BIPHASE CODED SIGNAL
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摘要: 着重研究二相编码长码长雷达信号的距离旁瓣抑制加权处理问题,阐述了一种从频域结构分析入手、运用于各种码长信号的设计最小峰值旁瓣滤波器的方法,并给出了190位码的计算机模拟结果。针对相位编码信号的多普勒频移灵敏问题,提出了频率分集处理和非相干型旁瓣抑制滤波器相结合的方法,以改善多普勒性能。模拟结果表明,频域分析法结合非相干加权方式设计出的最小峰值旁瓣滤波器,较好地满足了现代雷达系统的要求。Abstract: The issue of range sidelobe suppression filters for biphase coded signals is investigated. By analysing the characteristic in frequency domam, a design method for minimized peak sidelobe filters, which is suited for various code length is suggested. The computer simulation of sidelobe suppression is made based on 190-bit biphase coded signals. This paper presents a method to improve the Doppler-tolerance by combining the frequency diversity and non-coherent sidelobe reduction filters. The simulation results show that the peak sidelobe reduction filters meet the requirements of modern radar systems.
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林茂庸,柯有安,雷达信号理论,国防工业出版社,北京,1984年，第153-160页.[2]向敬成,邱万智,陈辅新,非相参积累雷达大压缩比二相编码信号的研究,电路与系统学报,1(1989)4,389-396.[3]E.L.Key, E.N. Fowle, R.D. Hargarty, A Method of Sidelobe Suppression in Phase-Coded Pulse Compression Systems. MIT Lincoln Lab. Tech. Rept. 209, Aug, 1959.[4]A.W. Rihaczek, R.M. Golden, IEEE Trans. on AES, AES-7(1971)6 1087-1092.[5]G. Gaiari, M. Orsini, Doppler-Tolerant Digital Pulse Compression with Minimized Hard-[6]ware, International Radar Conference, Paris, 1984, pp. 22-27. -
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