Introduction - If you have any usage issues, please Google them yourself
Frequency locked loop is also known as automatic frequency control (AFC) of loop, the use of a feedback loop to adjust input frequency change, finally achieve the frequency tracking, widely used in radar, satellite navigation, and other fields of doppler frequency tracking. -Locked loop, also known as automatic frequency control (AFC) loop, the use of feedback loop to adjust the input frequency changes, and finally achieve frequency tracking is widely used in radar, satellite navigation and other fields on the Doppler frequency tracking.