摘要
基于时域和频域两种循环谱密度估计方法,研究和总结了Frank码信号的循环谱特征及其与信号参数的对应关系。提出了一种没有先验知识条件下Frank码截获信号参数提取方法。首先介绍了Frank码信号的表示形式,给出了信号主要参数之间的关系;然后使用时域和频域两种循环谱密度函数估计方法分析了信号的循环谱特征,得到了循环谱特征与信号参数之间的对应关系;在此基础上提出了基于循环谱特征的信号参数提取方法。通过对六个Frank码信号参数提取相对误差的计算,验证了该算法的有效性。
Based on two cyclic spectral density estimating methods on time and frequency domain,the cyclic spectral features of frank coded signals are studied and the correspondence with signal parameters is investigated.A frank coded intercept signal parameter extraction method without prior knowledge is developed.Firstly,the expression of frank coded signal is described and the relationship between signal parameters is given;Secondly,the cyclic spectral features of signals are analyzed using two cyclic spectral density estimating methods on time and frequency domain,the features correspondence with signal parameters is obtained;Based on the above,a method for parameter extracting based on cyclic spectral features is proposed.The relative errors of six frank coded signals parameter extraction are measured to verify the validity of the method.
出处
《中国电子科学研究院学报》
2011年第4期401-405,共5页
Journal of China Academy of Electronics and Information Technology
关键词
Frank码
循环谱密度
参数提取
frank coded signal
cyclic spectral density
parameter extraction
