This paper studies the design methods of the nonlinear frequency modulation signal waveform.

研究了非线性调频信号波形设计方法。

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Broadband noise frequency modulation signal with high precision is commonly used in modern electronic interference system.

宽带高精度的噪声调频信号在现代电子干扰系统中应用广泛。

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In this paper, we present a new frequency modulation function on the basis of features of traditional non-linear frequency modulation signal.

本文将非线性调频技术引入引信探测体制中，利用线性调频波作为调制信号对射频信号进行二次调频。

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AM radio can be sent over larger distances, but the quality of the sound is not as good as a later kind of radio signal processing, called frequency modulation.

VOA: special.2010.12.08