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直扩信号的相关函数包络检测法 被引量:2

Detection Method of DDSS Signal by Correlation Function Envelope Peak
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摘要 针对未知DS/SS信号的存在提出了一种基于自相关理论的快速检测方法,可以在低信噪比条件下将扩频信号从噪声环境中检测出来。同时该方法还可以较为准确地估计出直扩信号的伪码周期。给出了相关函数的包络峰值提取法理论分析,建立了相应的实验仿真系统并进行了性能测试,能够在较低的输入信噪比下良好地工作。 A method of DSSS signal detect quickly in lower S/N is presented in this paper. By theoretical deduction about abstracting correlation function envelope peak to detect DSSS signal and simulation test, the results show that the system can work goodly in lower ratio of signal to noise.
出处 《无线电工程》 2006年第6期16-18,共3页 Radio Engineering
关键词 直扩信号 相关函数 信号检测 参数估计 DSSS signal correlation function signal detect parameter estimation
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