Ocean underwater channel is a stochastic acoustic propagation channel with its multipaths, time variety, and frequency spread.
海洋水声信道是多途、时变和频散的信道。
The invention provides a device for reducing electromagnetic interference, comprising a receiving module, a first compare module and a frequency spread module.
本发明提供一种用于降低电磁干扰的装置，其中包含一接收模块、一第一比较模块以及一展频模块。
If the first frequency is higher than the second frequency, the frequency spread module upwards spreads on the first frequency, and downwards spreads on the second frequency.
如果该第一频率高于该第二频率，则该展频模块将该第一频率向上展频，并将该第二频率向下展频。
Two kinds of typical wideband signal, Frequency Modulation (FM) signal and Frequency Spread signal, is analyzed qualitatively with wideband Ambiguity Function.
以宽带模糊度函数为工具定性地分析了两类典型宽带信号，即调频信号和频率分集信号。
Two kinds of typical wideband signal, Frequency Modulation (FM) signal and Frequency Spread signal, is analyzed qualitatively with wideband Ambiguity Function.
以宽带模糊度函数为工具定性地分析了两类典型宽带信号，即调频信号和频率分集信号。
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