| 基于DPT的非线性调频信号的DOA估计 |
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| 引用本文： | 高春霞,张天骐,谭方青,魏世朋.基于DPT的非线性调频信号的DOA估计[J].电子技术应用,2011(10):103-107. |
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| 作者姓名： | 高春霞 张天骐 谭方青 魏世朋 |
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| 作者单位： | 重庆邮电大学信号与信息处理重庆市重点实验室,重庆,400065 |
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| 摘 要： | 提出了一种基于DPT的宽带非线性调频信号的DOA估计算法.首先将非线性调频(NLFM)信号建模为高阶多项式相位信号(PPS)模型,然后通过高阶瞬时矩进行多项式相位变换.接收信号将变换为单个正弦信号和新的噪声.再利用ROOT-MUSIC或者ESPRIT算法对变换得到的正弦信号的波达方向进行估计.理论分析和仿真结果表明,该...
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| 关 键 词： | 非线性调频信号 高阶多项式相位信号 多项式相位变换 波达方向估计 |
DOA estimation of wideband nonlinear frequency modulation signal based on discrete polynomial phase transform |
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| Gao Chunxia,Zhang Tianqi,Tan Fangqing,Wei Shipeng.DOA estimation of wideband nonlinear frequency modulation signal based on discrete polynomial phase transform[J].Application of Electronic Technique,2011(10):103-107. |
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| Authors: | Gao Chunxia Zhang Tianqi Tan Fangqing Wei Shipeng |
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| Abstract: | A novel algorithm for the direction of arrival(DOA) estimation of wideband nonlinear frequency modulation signal using discrete polynomial-phase transform(DPT) is introduced.In this paper,firstly,a nonlinear FM(NLFM) signal is modeled as a high-order polynomial phase signal(PPS).And then,through high order instantaneous moments,the polynomial phase transformation is carried on.After that,the higher-order polynomial phase signal can be transformed into a single sinusoidal signal and the new noise.The ROOT-MUSIC or ESPRIT algorithm is then used to estimate the DOA of the single sinusoidal signal.Theoretical analysis and simulation results show this method is simply and estimation performance is good. |
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| Keywords: | nonlinear FM higher order polynomial phase signal polynomial phase transform direction of arrival estimation |
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