英语翻译如果在信号处理系统的输入端,信噪比已很糟糕,甚至信号深埋于噪声之中,这时要想将信号检测出来,仅用低噪声电子设计的

If the signal-to-noise ratio at the input terminal of signal processing system is bad, or even buried in the noise, low noise electronic design will not be sufficient to detect the signal
Weak signal detection allpies modern electronics and signal processing methods to extract useful signal from the noise, the key of which is to reduce the noise and recover, increase and extract useful signal. Related detection technology is a technique based on the relativity principle.It can utmostly reduce the bandwidth and the noise and test the weak signal through the calculation of autocorrelation or cross-correlation.
This paper will discuss simply the principle of weak signal detection based on the improvement of signal-to-noise ratio in the signal processing system. It puts an emphasis on the principle, method and application to detect weak signal applying relativity detection.
人工翻译,请参考