A Detection Method of Coherence Average for Weak Signalwithout Synchronous Signal
Aiming Zhao · Harbin Ligong Daxue xuebao · 2002
A detection method for weak signal with fast autocorrelation and coherence average is introduced, we can calculate the estimation of autocorrelation with the algorithm of section fast autocorrelation, and calculate the period of the weak signal with autocorrelation, fetch the true signal from the noise with coherence average.We can fetch true signal from noise without extra synchronous signal and hardware, the method is very effective for no synchronous signal. A program is made to test the method. Running results show that it improves signal resolution.