December 7, 2017 Comments Off on Why Are Coral Reefs So Fragile Why Are Coral Reefs Overexploited December 7, 2017 Comments Off on Why Are Coral Reefs Overexploited
Automatic gain control (AGC), also called automatic voltage gain, is a closed-loop feedback regulating circuit, the purpose of which is to provide a controlled signal amplitude at its output, despite variation of the amplitude in the input signal.
A related application of AGC is in radar systems, as a method of overcoming unwanted clutter echoes. This method relies on the fact that clutter returns far outnumber echoes from targets of interest. The receiver's gain is automatically adjusted to maintain a constant level of overall visible clutter.