相位编码旁瓣抑制及其在MSK扩频中的应用
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Phase Coded Sidelobe Suppression and Its Application to MSK Spread Spectrum
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    摘要:

    与相位编码信号一样,MSK扩频信号在采用匹配滤波处理时,也存在旁瓣较高的现象,影响弱目标检测。相位编码信号通常使用迭代加权最小二乘算法来降低旁瓣,将该算法应用于MSK扩频信号的旁瓣抑制,可显著提高主副比。仿真结果表明,主副比改善了10 dB以上,而信噪比损失仅约1 dB。

    Abstract:

    Like phase coded signals, when processed by match filtering, MSK spectrum signals will have higher sidelobes which affects the detection of weak targets. Phase coded signals usually use the iteratively reweighed least square algorithm to suppress sidelobes. When this algorithm is applied to MSK spectrum signals for sidelobe suppression, it is found that the ratio of mainlobe to sidelobe can be improved significantly. The simulation results show that the ratio of mainlobe to sidelobe has been raised over 10 dB while the loss of SNR is only around 1 dB.

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李海轮,孙盛喜.相位编码旁瓣抑制及其在MSK扩频中的应用[J].压电与声光,2014,36(3):350-352. LI Hailun, SUN Shengxi. Phase Coded Sidelobe Suppression and Its Application to MSK Spread Spectrum[J]. PIEZOELECTRICS AND ACOUSTOOPTICS

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  • 在线发布日期: 2014-05-12
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