| 外辐射源雷达系统中时延估计算法及仿真 |
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| 引用本文： | 王俊林,游志刚,梁忞飞.外辐射源雷达系统中时延估计算法及仿真[J].现代防御技术,2011,39(1):129-132. |
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| 作者姓名： | 王俊林 游志刚 梁忞飞 |
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| 作者单位： | 电子工程学院,安徽,合肥,230037 |
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| 摘 要： | 时延估计的方法有经典的广义相关法、自适应法、循环平稳法、高阶累积量法、时频分析法等,重点分析了外辐射源雷达系统中用于时延估计的循环平稳法和相关法,并给出了循环平稳法和相关法用于时延估计的仿真,得出了仿真结果。仿真结果表明,对QPSK信号无法用循环平稳的方法来进行时差的获取,用相关法在极低信噪比条件下检测出目标信号,长时间的信号积累是必需的。
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| 关 键 词： | 到达时间差 相关 循环平稳 |
Arithmetic and Simulation of Correlation Method and Cyclic Stationary Based on Non-Cooperative Illuminators |
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| WANG Jun-lin,YOU Zhi-gang,LIANG Min-fei.Arithmetic and Simulation of Correlation Method and Cyclic Stationary Based on Non-Cooperative Illuminators[J].Modern Defence Technology,2011,39(1):129-132. |
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| Authors: | WANG Jun-lin YOU Zhi-gang LIANG Min-fei |
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| Institution: | WANG Jun-lin,YOU Zhi-gang,LIANG Min-fei (Electronic Engineering Institute,Anhui Hefei 230037,China) |
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| Abstract: | The methods of TDOA estimation include the classical generalized correlation method,adaptive TDOA estimation and TDOA estimation algorithms based on high order cumulant,time frequency distribution and cyclic stationary.The correlation and cyclic stationary methods are analyzed and the simulation results are presented.The results show that TDOA of QPSK signal may not be acquired with cyclic stationary method and long time signal accumulation is a prerequisite in using correlation method. |
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| Keywords: | time difference of arrival(TDOA) correlation cyclic stationary |
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