Synchronous detection of signal and conversion of analog into digital signal
Q. Synchronous detection means- Published on 13 Oct 15a. Extracting week signal from noise
b. Need a reference signal with predetermined frequency and phase
c. Both a and b
d. None of the above
ANSWER: Both a and b
Synchronous detection means demodulation of received signal and extracting information from it. It requires a reference signal at the receivers with predetermined frequency and phase which is generated using extra circuitry. Synchronous detection helps in extracting weak signals from noise.
