Weak signal detection has been widely used in numerous fields such as communication, radar and sonar. With the increasing needs of weak signal detection, it has been a research hot spot. In order to detect the underlying signals in high levels of noise rapidly and accurately, scholars explore and develop the new theory and methods of weak signal detection. There are some limitations of the traditional time domain signal detecting methods, so it is very difficult to make the signal to noise ratio(SNR) thresh...
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