利用协方差矩阵的特征值。 能实现信号和噪声的分解。
The eigenvalue of covariance matrix can be used to separate signal from noise.
前者是通过对载波信道的频率特性时变性测试、分析，实现信号平稳传输。
The former realizes steady transmission of signal by testing and analysing the carrier channel's frequency characteristic .
经过系统软硬件开发，能够实现信号调理、数据采集与存储、USB通信、数据或曲线显示等功能。
After software exploitation, it can realize signal test, data collecting and memory, USB correspondence, data or curve displaying.
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