| 基于共轭模糊函数的时差-频差联合估计方法 |
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| 引用本文： | 齐晓东,陆春伟,徐友根,刘志文.基于共轭模糊函数的时差-频差联合估计方法[J].航天电子对抗,2009,25(6):58-61. |
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| 作者姓名： | 齐晓东 陆春伟 徐友根 刘志文 |
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| 作者单位： | 北京理工大学信息与电子学院,北京,100081 |
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| 摘 要： | 提出了一种新的二阶到达时差（TDOA）和到达频差（FDOA）联合估计算法。该方法利用非圆信号具有非零二阶共轭矩这一特点构造所谓二阶共轭模糊函数,通过对该模糊函数进行二维极值搜索获得TDOA和FDOA的联合估计。新方法能够抑制相关噪声,但计算复杂度远小于传统高阶累积量方法。
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| 关 键 词： | 模糊函数 非圆信号 到达时差 到达频差 |
TDOA-FDOA estimation with conjugate ambiguity function |
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| Qi Xiaodong,Lu Chunwei,Xu Yougen,Liu Zhiwen.TDOA-FDOA estimation with conjugate ambiguity function[J].Aerospace Electronic Warfare,2009,25(6):58-61. |
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| Authors: | Qi Xiaodong Lu Chunwei Xu Yougen Liu Zhiwen |
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| Institution: | (School of Information and Electronics, Beijing Institute of Technology ,Beijing 100081 ,China) |
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| Abstract: | A new method for joint estimation of time difference of arrival （TDOA） and frequency difference of arrival （FDOA） is proposed. The non-vanished conjugate second-order conjugate moment of noncircular signals is utilized to construct a new conjugate ambiguity function. By 2D extreme searching of the newly defined conjugate ambiguity function,the TDOA and FDOA of signal can be obtained simultaneously. The new method is insensitive to the colored noise but is computationally simpler than the traditional high-order cumulant meth-ods. |
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| Keywords: | ambiguity function noncircular signal time difference of arrival frequency difference of arrival |
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