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这种谱仪回避了A/D转换器的限制，是信号谱估计的一种新理论和新技术。
The analyzer can avoid the limitation of A/D converter. Thisis a new theory and technology on signal spectrum estimation.
首先介绍了FSK信号的频谱特性，详细分析了FSK信号谱估计检测理论。
Firstly, the spectrum properties of FSK signal are introduced and the principle of spectrum estimation for FSK signal detection is discussed in detail.
对信号波达方向(doa)的估计是空间谱估计研究的主题。
The main studied topic of spatial spectrum estimation is the direction of arrival (DOA) of spatial signals.
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