| 基于分数阶相关的无源雷达动目标检测方法 |
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| 引用本文： | 赵兴浩,陶然. 基于分数阶相关的无源雷达动目标检测方法[J]. 电子学报, 2005, 33(9): 1567-1570 |
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| 作者姓名： | 赵兴浩 陶然 |
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| 作者单位： | 北京理工大学电子工程系,北京,100081;北京理工大学电子工程系,北京,100081 |
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| 基金项目： | 国家自然科学基金，教育部优秀青年教师资助计划 |
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| 摘 要： | 本文将分数阶相关引入到互模糊函数的计算中,提出了一种基于分数阶相关的无源雷达动目标检测方法.与基于FFT计算互模糊函数的方法相比,采用这种方法的优点是在检测目标时可以只扫描某个环形扇区而不用计算整个模糊平面,减小了计算量;另外,由于在计算互模糊函数时极角和极径的取样间隔可以任意选择,突破了时域采样间隔的限制,可在时延和频移上均得到高精度估计.最后通过仿真实例验证了该方法的有效性.
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| 关 键 词： | 分数阶相关 互模糊函数 无源雷达 动目标检测 |
| 文章编号： | 0372-2112（2005）09-1567-04 |
| 收稿时间： | 2004-03-16 |
| 修稿时间： | 2004-03-162005-01-16 |
A New Method for Passive Radar MTD Based on the Fractional Correlation |
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| ZHAO Xing-hao,TAO Ran. A New Method for Passive Radar MTD Based on the Fractional Correlation[J]. Acta Electronica Sinica, 2005, 33(9): 1567-1570 |
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| Authors: | ZHAO Xing-hao TAO Ran |
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| Affiliation: | Dept.of Electronics Engineering,Beijing Institute of Technology,Beijing 100081,China |
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| Abstract: | A new method for passive radar MTD based on fractional correlation is presented by introducing the fractional correlation into the computation of the cross-ambiguity function(CAF).Compared with the FFT-based computation to CAF,the presented method can scan the target only in certain circular sector instead of the whole ambiguity plane,which may decrease the computational load.In addition,since sampling interval of both the angle and the radial can be chosen arbitrarily in the computation of the CAF,it removes the restriction of original time interval,and may provide the accurate estimation in both time-delay and Doppler shift.Finally,the method is also verified by the simulation examples. |
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| Keywords: | fractional correlation cross-ambiguity function passive radar MTD |
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