| 载波偏置测距仪信号的循环平稳特性 |
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| 引用本文： | 李冬霞,李思,刘海涛.载波偏置测距仪信号的循环平稳特性[J].系统工程与电子技术,2016,38(8):1935-1938. |
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| 作者姓名： | 李冬霞 李思 刘海涛 |
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| 作者单位： | (中国民航大学天津市智能信号与图像处理重点实验室, 天津 300300) |
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| 摘 要： | 针对L频段数字航空通信系统1(L band digital aeronautical communications system 1, L DACS1)中存在的载波偏置测距仪脉冲干扰信号,首先建立测距仪(distance measure equipment,DME)脉冲信号模型,证明了载波偏置测距仪信号是循环平稳信号;随后理论分析并推导给出其循环自相关函数和循环谱的数学表示;最后仿真验证了载波偏置测距仪信号具有循环平稳特性的正确性。
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Cyclostationarity of carrier offset distance measure equipment signals |
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| LI Dong-xia,LI Si,LIU Hai-tao.Cyclostationarity of carrier offset distance measure equipment signals[J].System Engineering and Electronics,2016,38(8):1935-1938. |
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| Authors: | LI Dong-xia LI Si LIU Hai-tao |
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| Institution: | (Tianjin Key Lab for Advanced Signal Processing, Civil Aviation University of China, Tianjin 300300, China) |
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| Abstract: | Aiming at the carrier offset distance measure equipment (DME) impulse interference signal existing in L band digital aeronautical communications system 1(L DACS1), the model of carrier offset DME signals is built. Firstly, it is verified that the carrier offset DME signal is cyclostationary. Then based on theoretical analysis, the cyclic autocorrelation function and cyclic spectrum of the carrier offset DME signal are derived. Finally, the computer simulation results indicate the theoretical analysis is correct. |
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