| 一种实时轨道移频信号的检测方法 |
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| 引用本文： | 王钢,于珊珊.一种实时轨道移频信号的检测方法[J].交通与计算机,2006,24(3):74-76,85. |
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| 作者姓名： | 王钢 于珊珊 |
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| 作者单位： | 哈尔滨工业大学,哈尔滨,150001 |
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| 摘 要： | 针对轨道移频信号的频谱特点，采用欠采样技术对轨道移频信号进行非整周期的采样，经过计算机仿真实验，验证了基于非整周期采样方法对轨道移频信号进行实时傅里叶变换（FFT）分析检测的可行性，证明采样方法满足检测指标的要求。同时对其频率分辨率和实时性进行了讨论。
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| 关 键 词： | 移频信号 欠采样 频率分辨率 实时性 |
| 收稿时间： | 2006-02-20 |
| 修稿时间： | 2006-02-20 |
A Real-Time Detection for Tramroad FSK Signal |
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| WANG Gang,YU Shanshan.A Real-Time Detection for Tramroad FSK Signal[J].Computer and Communications,2006,24(3):74-76,85. |
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| Authors: | WANG Gang YU Shanshan |
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| Institution: | Harbin Institute of Technology, Harbin 150001,China |
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| Abstract: | According to the characteristics of the wayside frequency-shift signal spectrum, and based on a great number of computer emulators and real-tlme experiments and on non-complete periods sampling, the feasibility of applying the under-sampllng technology to the real-time FFT analytical method of tramroad FSK signal is validated. The result satisfies the requirements of the detection guideline. The frequency resolution and the character of real-time are also discussed. |
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| Keywords: | FSK signal under-sampling frequency resolution real-time |
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