| 基于相对无模糊相位重构的自动脉内调制特性分析 |
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| 引用本文： | 黄知涛,周一宇,姜文利.基于相对无模糊相位重构的自动脉内调制特性分析[J].通信学报,2003,24(4):153-160. |
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| 作者姓名： | 黄知涛 周一宇 姜文利 |
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| 作者单位： | 国防科学技术大学,电子科学与工程学院,湖南,长沙,410073 |
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| 基金项目： | 骨干教师资助计划项目(GG-081-90002-1019) |
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| 摘 要： | 文章首先分析并给出了相对无模糊相位重构算法，在此基础上构建了基于相位差分峰值幅度比较的BPSK及QPSK调制信号调制方式识别方法和基于最小二乘相位差分直线拟合的LFM信号调制方式识别方法。仿真结果充分验证了相位重构算法和调制方式识别方法的有效性。
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| 关 键 词： | 脉内调制方式识别 相对无模糊 相位重构 直线拟合 峰值检测 |
| 文章编号： | 1000-436X(2003)04-0153-08 |
| 修稿时间： | 2001年11月19 |
The automatic analysis of intrapulse modulation characte- ristics based on the relatively non-ambiguity phase restoral |
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| HUANG Zhi-tao,ZHOU Yi-yu,JIANG Wen-li.The automatic analysis of intrapulse modulation characte- ristics based on the relatively non-ambiguity phase restoral[J].Journal on Communications,2003,24(4):153-160. |
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| Authors: | HUANG Zhi-tao ZHOU Yi-yu JIANG Wen-li |
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| Abstract: | The problem of how to automatically analyze intrapulse modulation characteristics is discussed in the paper. An approach to restoring relatively non-ambiguity phase is first introduced, which is proved to be effective according to some simulation results. And the modulation recognition methods for BPSK and QPSK based on the amplitudes of peaks of the phase difference and for LFM based on LS fitting of a line are developed. The critical signal-to-noise required to effectively identify the modulation is also discussed. Several simulations are performed on BPSK, QPSK and LFM, and simulation results demonstrate the efficiency of the modulation recognition approaches. |
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| Keywords: | intrapulse modulation recognition phase restoral fitting of a line peaks detection |
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