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- In automatic classification of digital modulation signal,computing envelope variance after difference has important meaning to distinguish PSK and FSK signal. 在数字信号的自动调制方式识别中,差分后求包络方差对于区分FSK、PSK信号具有十分重要的意义。
- This paper discusses a method to demodulate FSK signal, on the basis of FPGA chip, by applying all- digital phase locked loop. 本文研究了一种采用全数字锁相环实现频移键控FSK信号解调的新方案。
- Therefore，fast accurately detection the FSK signal to have the extremely important practical significance to the locomotive fast safe operation. 因此，快速准确地检测FSK信号对机车快速安全运行有着十分重要的现实意义。
- After speedup of the train, the FSK signal plays more important role in the train"s safe running insurance as well as malfunction analysis. 在铁路通信领域,随着列车的数次提速,移频机车信号在行车安全保障方面和故障分析方面的作用更加重要。
- In this article, we study first the main characters of cab FSK signal, then the wavelet packets method is applied to the FSK signal filtering. 本文首先研究了车载FSK信号的特征，再利用小波包对车载FSK信号进行滤波处理。
- FSK signal's real-time detection with high precision and its implementation with DSP[ J ].Journal of China Institute of Communications,2001,22 (9):78-83 (in Chinese). [2]王庆文;孟宪德.;车载FSK信号的实时高精度检测与DSP实现[J]
- Moreover,when testing the voltage level of the FSK signal, it can be rectified directly, thedata processing is similar to the testing of compensating capacitors. 而测试信号电压时,直接对移频信号整流,后期处理与测试补偿电容类同。
- This paper introduces the theory and algorithm of SVM at first.It proposes to use the SVM to decode FSK signal based on the classifiable character of SVM. 本文首先详细介绍了支持向量机的原理和算法，根据支持向量机的分类特性，提出将支持向量机应用到FSK解码技术中。
- The performances and characteristiss of the zero crossing digital demodulation is ana lysed through the comparison of various ways of Fsk signal digital demodulation. And ideal conclusion is reached. 对各种频移键控信号的数字解调方法进行了研究和比较，并重点分析了零交点数字解调法的性能特征，最后得出了一个最佳结论.
- In the Coordinate DDSs system the time-sharing output and the accurate synthesis of respective output frequency bands are the main problems, which are solved by Micro-processor PIC16F874 controlling the DATA FSK signal. 在并行DDS系统中，两个DDS的分时输出以及频率的精确接续是实现的难点。 本文用单片机PIC16F874控制DDS的DATA FSK信号很好地解决了这一问题。
- Abstract: The performances and characteristiss of the zero crossing digital demodulation is ana lysed through the comparison of various ways of Fsk signal digital demodulation. And ideal conclusion is reached. 文摘:对各种频移键控信号的数字解调方法进行了研究和比较，并重点分析了零交点数字解调法的性能特征，最后得出了一个最佳结论.
- A comparison of WVD, PWVD, SPWVD used for demodulating FSK signal is discussed, and the upper and down side frequencies estimating algorithms based on SPWVD are chosen in the paper. 文中对FSK信号的WVD、PWVD和SPWVD结果作了比较，选择了基于SPWVD来估计FSK信号的上下边频，并给出了具体的算法步骤。
- With the wide application of spectrum analysis techniques in railway, it is discovered that the spectrums of FSK signal and AM signal are very similar, and very difficult to be distinguished. 并对处理后的坝体进行现场围井抽水试验，得出防渗墙的渗透系数满足防渗效果；
- A New Real-Time Detection for Tramroad FSK Signal 一种轨道移频信号实时检测的新方法
- A Real-Time Detection for Tramroad FSK Signal 一种实时轨道移频信号的检测方法
- FSK signal detection based on fractal dimension 基于分形维数的FSK信号检测
- Inspecting FSK signal based on MCU and FPGA 基于FPGA和单片机技术的FSK信号监测
- A red light is usually a signal of danger. 红灯通常是危险的信号。
- I stood watching for the signal to change to green. 我站着等待交通信号转为绿灯。
- Let's set the clock by the radio time signal. 咱们照着收音机的报时信号把钟对一对。
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