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一种基于高效FrFT的LFM信号检测与参数估计快速算法

黄响 唐世阳 张林让 谷亚彬

黄响, 唐世阳, 张林让, 谷亚彬. 一种基于高效FrFT的LFM信号检测与参数估计快速算法[J]. 电子与信息学报, 2017, 39(12): 2905-2911. doi: 10.11999/JEIT170467
引用本文: 黄响, 唐世阳, 张林让, 谷亚彬. 一种基于高效FrFT的LFM信号检测与参数估计快速算法[J]. 电子与信息学报, 2017, 39(12): 2905-2911. doi: 10.11999/JEIT170467
HUANG Xiang, TANG Shiyang, ZHANG Linrang, GU Yabin. A Fast Algorithm of LFM Signal Detection and Parameter Estimation Based on Efficient FrFT[J]. Journal of Electronics & Information Technology, 2017, 39(12): 2905-2911. doi: 10.11999/JEIT170467
Citation: HUANG Xiang, TANG Shiyang, ZHANG Linrang, GU Yabin. A Fast Algorithm of LFM Signal Detection and Parameter Estimation Based on Efficient FrFT[J]. Journal of Electronics & Information Technology, 2017, 39(12): 2905-2911. doi: 10.11999/JEIT170467

一种基于高效FrFT的LFM信号检测与参数估计快速算法

doi: 10.11999/JEIT170467
基金项目: 

国家自然科学基金(61601343, 61671361, 61301285),中国博士后基金面上 (2016M600768)

A Fast Algorithm of LFM Signal Detection and Parameter Estimation Based on Efficient FrFT

Funds: 

The National Natural Science Foundation of China (61601343, 61671361, 61301285), China Postdoctoral Science Foundation Funded Project (2016M600768)

  • 摘要: 针对传统方法对线性调频(LFM)信号检测与参数估计运算量大的问题,该文提出一种基于高效FrFT的快速算法。首先,分析了高效FrFT原理,指出高效FrFT存在旋转角度的选取、易受初始频率影响以及抗噪性能差等问题。针对以上问题,该文利用修正的功率谱平滑滤波方法对高效FrFT进行改进。理论分析表明,该文提出的改进算法仅用3次旋转角度即可实现较低信噪比下LFM信号的检测和参数估计。与传统的FrFT相比,在保证参数估计精度不变的情况下,运算复杂度大大降低,更符合工程上实时处理的要求。仿真结果验证了该算法的有效性。
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出版历程
  • 收稿日期:  2017-05-16
  • 修回日期:  2017-09-25
  • 刊出日期:  2017-12-19

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