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波形未知信号时频差参数的最大似然估计算法 被引量:1

A Maximum-Likelihood Algorithm for TDOA/FDOA Estimationof Unknown Deterministic Signals
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摘要 提出了波形未知确定信号时频差参数估计的最大似然算法,得出利用互模糊函数可以实现此种信号条件下时频差参数最大似然估计的结论,推导出了闭合形式的克拉美罗下界并对比了不同信号模型下的参数估计精度。仿真实验结果表明了估计算法和性能分析的正确性。 A Maximum-Likelihood algorithm for TDOA/FDOA estimation of unknown deterministic signals is proposed. It is shown that the algorithm leads calculation of the complex ambiguity function. The parameter estima- tion lower bound is calculated and compared in different signal models. Simulations are provided to support the theoretical results.
作者 廖理 张韬
出处 《电讯技术》 北大核心 2013年第6期735-738,共4页 Telecommunication Engineering
关键词 波形未知信号 时频差参数估计 最大似然算法 克拉美罗下界 unknown deterministic signals TDOA/FDOA estimation maximum-likelihood algorithm eramer-rao lower bound(CRLB)
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