未知波形信号的多径时延估计新方法

易岷; 魏平; 肖先赐

未知波形信号的多径时延估计新方法

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出版历程
- 收稿日期: 2003-01-24
- 修回日期: 2003-10-21
- 刊出日期: 2004-08-19

A New Algorithm for Multipath Time Delay Estimation of Unknown Signal

摘要

摘要: 该文提出了一种从单个阵元接收数据中估计未知波形信号多径回波时延的新方法。该方法通过建立单阵元接收数据的频域信号模型，分析得出了利用该模型估计多径时延与利用阵列估计来波方向问题的相似性。进而，估计来波方向的ESPRIT算法被改造用于估计多径时延。文中还对通过信号模型估值存在的模糊问题进行了分析，并提出了解决办法。仿真实验结果证明了新方法的有效性。
- 多径时延估计; 来波方向估计; ESPRIT
Abstract: This paper presents a new approch for estimating the multipath time delay of signals with unknown shape from observations received by one sensor. In th? paper, a frequency domain model for the received data is developed, and multipath timo delay estimation using this model is found to be similar to DOA estimation using an array. Thus, an algorithm for estimating time delays is derived based on the ESPRIT algorithm for DOA estimation. Ambiguities arising from the model have also been analyzed, and solutions to them are provided. Simulation results verify the efficiency of this method.

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参考文献(1)

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