| Hermite函数展开的宽带DOA估计 |
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| 引用本文： | 张曙,李清伟. Hermite函数展开的宽带DOA估计[J]. 哈尔滨工程大学学报, 2012, 33(9): 1170-1174,1198 |
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| 作者姓名： | 张曙 李清伟 |
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| 作者单位： | 哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨,150001 |
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| 基金项目： | 国防科学技术工业委员会基础研究基金资助项目(40106030503) |
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| 摘 要： | 针对一般的宽带DOA估计算法需要进行角度预估问题,提出了一种基于Hermite函数展开的宽带DOA估计方法.给出了算法的理论推导过程,并且通过对比仿真试验,验证了该算法能够有效地实现角频分离,避免了角度预估计问题.由于Hermite函数良好的收敛特性和能量集中的优点,与基于Bessel函数或Legendre函数展开的宽带算法相比,具有减小运算复杂度和提高估计精度的优点.
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| 关 键 词： | 宽带信号 DOA估计 角频分离 角度预估计 Hermite函数 |
DOA estimation of wideband signals based on the Hermite function |
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| ZHANG Shu , LI Qingwei. DOA estimation of wideband signals based on the Hermite function[J]. Journal of Harbin Engineering University, 2012, 33(9): 1170-1174,1198 |
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| Authors: | ZHANG Shu LI Qingwei |
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| Affiliation: | (College of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,China) |
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| Abstract: | Due to the problem that common algorithms of direction of arrival(DOA) estimation of wideband signals need pre-estimation of the angles,an algorithm based on the Hermite function was proposed.Theoretical derivation of the algorithm was given,and through comparison and simulation it was proven that this algorithm can effectively separate angles from frequency,which can eliminate the problem of pre-estimation.Due to the excellent ability of convergence and the feature of energy concentration of the Hermite function,this algorithm has less computational complexity and higher estimation precision than the methods based on the Bessel function or Legendre function. |
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| Keywords: | wideband signals DOA estimation separation between angles and frequency angles pre-estimation Hermite function |
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