一種新的二相碼旁瓣抑制濾波器
A NOVEL SIDELOBE SUPPRESSION FILTER FOR BINARY PHASE CODED WAVEFORMS
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摘要: 二相編碼是一種在雷達(dá)脈沖壓縮中得到廣泛應(yīng)用的波形,但是一般的二相碼波形的旁瓣抑制算法只適用于短碼(如Barker碼等),且設(shè)計(jì)得到的濾波器階數(shù)比較高。本文提出了一種新的基于時(shí)域綜合的二相碼旁瓣抑制濾波器,能適用于各種長(zhǎng)度的二相碼,包括m序列等。文中給出了m序列和Barker碼旁瓣抑制濾波器結(jié)果,并與現(xiàn)有的濾波器性能進(jìn)行了比較。
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關(guān)鍵詞:
- 二相碼; 旁瓣抑制; 時(shí)域綜合
Abstract: Binary Phase Coded Waveform(BPCW) is a widely used waveform in radar pulse compression, but the Sidelobe Suppression Filter(SSF) designing algorithms for BPCW are always limited to short codes such as Barker code, and the ranks of the SSF are always high. A new kind of SSF based on time domain synthesis is presented. It can be used for various length codes, including the m-sequence and so on. Some simulation results of time domain synthesized SSF for the Barker code and m-sequence are given, with the performance comparison of the new filter with some known filters. -
A.M. Boehmer, Binary phase compression codes, IEEE Trans. on IT, 1967, IT-13(2), 156-167.[2]K.V. Rao, V. U. Reddy, Biphase sequence generation with low sidelobe autocorrelation function,IEEE Trans. on AES, 1986, AES-22(2), 128-133.[3]S.R. Gottesman, P. G. Grieve, A class of pseudonoise-likc pulse compression codes, IEEE Trans.on AES, 1992, AES-28(2), 355-362.[4]J.M. Baden, M. N. Cohen, Optimal sidelobe suppression for biphase codes, National TelecomConf., U.S.A., 1991, 127-131.[5]C.X. Hua, J. Oksman, A new algorithm to optimize Barker code sidelobe suppression filters,IEEE Trans. on AES, 1990, AES-26(4), 673-677.[6]S. Zoraster, Minimum peak range sidelobe filters for binary phase-coded waveforms, IEEE Trans.on AES, 1980, AES-16(1), 112-115. -
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