| 一种新的卫星信号调制方式识别方法 |
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| 引用本文： | 杨 健,徐宏飞,陈 曦.一种新的卫星信号调制方式识别方法[J].电讯技术,2012,52(5):684-688. |
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| 作者姓名： | 杨 健 徐宏飞 陈 曦 |
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| 作者单位： | 1. 解放军73691部队,南京,210014
2. 南京理工大学电子工程与光电技术学院,南京,210094 |
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| 摘 要： | 根据采样数据恢复信号频谱后，采用频域估计法检测卫星信号中心频率，再利用延
迟相乘法估计卫星信号调制速率。通过内插恢复得到信号星座图，根据星座图特征对无先验
信息的卫星信号调制方式进行识别。利用实测的8PSK和QPSK卫星信号检测了识别的效果，
在信号信噪比低于5 dB时无法得到信号星座图。
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| 关 键 词： | 卫星信号 调制识别 调制速率 星座图 频域估计 |
A new modulation mode recognition method for satellite signals |
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| YANG Jian,XU Hong-fei and CHEN Xi.A new modulation mode recognition method for satellite signals[J].Telecommunication Engineering,2012,52(5):684-688. |
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| Authors: | YANG Jian XU Hong-fei and CHEN Xi |
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| Affiliation: | 1.Unit 73691 of PLA,Nanjing 210014,China;2.School of Electronic Engineering and Optoelectronic Technology,Nanjing University of Science and Technology,Nanjing 210094,China) |
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| Abstract: | The signal spectrum is reconstructed from the sample data and the center frequency is detected by using the frequency-domain estimation method,then the signal modulation rate is estimated by adopting the delay-multiply method.Finally,the signal constellation can be obtained by interpolating and sequence recovering.According to the constellation characteristic,the modulation mode of satellite signal is recognized without knowing any a priori information.The recognition effect is tested by taking the practical 8PSK and QPSK satellite signals as example.Further more,the method can not resolve constellation when Signal-to-Noise Ratio(SNR) of signal is below 5 dB. |
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| Keywords: | satellite signal modulation mode recognition modulation rate constellation f
requency-domain estimation |
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