| 基于周期FRFT的对称三角LFMCW信号检测算法 |
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| 引用本文： | 宦爱奇,刘锋,王泽众.基于周期FRFT的对称三角LFMCW信号检测算法[J].四川兵工学报,2016(3):86-89. |
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| 作者姓名： | 宦爱奇 刘锋 王泽众 |
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| 作者单位： | 1. 海军航空工程学院,山东烟台,264001;2. 海军装备研究院,北京,100249 |
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| 基金项目： | 国家自然科学基金(61571454) |
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| 摘 要： | 对称三角线性调频连续波信号（STLFMCW）是一种常用的线性调频连续波信号，具有低截获概率性质。针对这一性质，提出了一种周期分数阶傅里叶变换（PFRFT）对对称三角线性调频连续波信号的检测算法；分析了对称三角线性调频连续波信号的PFRFT及其性质，并对无先验知识条件下的STLFMCW信号检测技术进行研究，给出了基于PFRFT的STLFMCW信号检测流程并进行性能分析仿真；仿真结果表明：该算法对STLFMCW信号有良好的检测性能，相比于FRFT，PFRFT更适合对STLFMCW信号进行处理。
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| 关 键 词： | 周期分数阶傅里叶变换(PFRFT) 对称三角线性调频连续波(LFMCW) 信号检测 |
Symmetrical Triangular Linear Frequency Modulation Continuous Wave Radar Signal Detection Algorithm Based on Periodic Fourier Transform |
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| Abstract: | Symmetrical triangular linear frequency modulation continuous wave (STLFMCW)radar signal which has low probability interception characteristics is a common linear frequency modulation continuous wave radar signal.For this characteristic,a STLFMCW detection algorithm which was based on periodic Fourier transform(PFRFT)was proposed.Firstly,the properties of the periodic FRFT of symmetrical tri-angular linearly frequency modulated continuous wave signals were analyzed.Secondly,STLFMCW signals detection technology with no prior knowledge was studied.Finally,the workflow of the application of the algorithm and simulations of STLFMCW based on PFRFT were proposed.The simulations verify the good detection performance of the algorithm.Compared to FRFT,PFRFT is more suitable for processing STLFMCW signals. |
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| Keywords: | PFRFT STLFMCW signal detection |
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