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一种基于ARMA模型的欠定混合快速跳频信号参数盲估计算法

DOI: 10.13190/j.jbupt.2014.05.004, PP. 16-19

Keywords: 快速跳频,参数盲估计,欠定混合

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Abstract:

针对欠定情况下的快速跳频信号的参数估计问题,在基于自回归滑动平均(ARMA)模型的跳变点检测方法的基础上,提出了一种改进的快速跳频信号参数盲估计算法.通过跳周期修正ARMA模型预测点和傅里叶变换分别得到准确的跳变时刻和载频估计,从而实现快速跳频信号的参数估计.实验结果表明,该算法在欠定条件下,当信噪比大于10dB时,相对现有算法跳变点检测准确率增加了5倍左右,检测准确的概率可以达到90%以上.

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