These analysis method in fault diagnosis process can play an important role, but Fourier analysis method is only suitable for analysis of the continuous, the steady time signal.
这些分析方法在故障诊断过程中起到了重要的作用，但傅立叶分析方法只适合于分析连续的、平稳的时域信号。
In order to produce stable and continuous adjustment impulse signal, it has been realized using FPGA based on analyzing the theory of continuous signal produce.
为了能够产生连续可调和稳定的脉冲信号，在分析连续信号产生原理的基础上，采用基于FPGA技术实现。
In the highly crowded HF band, available continuous bandwidth is very narrow, this threaten the viability of HF radar based on the continuous spectra signal system seriously.
在拥挤的高频频段，可用的连续带宽比较窄，基于连续谱信号体制的高频雷达的生存能力受到严重威胁。
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