... bandpass flatness 通带的平滑性 spectral bandpass 频谱带通，光谱带通 multiple precision notation 多倍精度标记 ...
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方法分析了带通采样信号的频谱和规律，导出了低速采样频率的选取公式。
MethodsAnalyze spectrum of the sample signal and propose the formula of common sample frequency in low speed.
研究了采用带通采样的方法，实现HF雷达噪声频谱在线监测的原理，以及频谱监测的波形设计和系统实现。
In this paper, an online inspecting scheme of noise is introduced by employing the band sampling method, and the design of wave shape and the implementation of HF radar system are presented.
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