Dictionary:Active

From SEG Wiki
Jump to navigation Jump to search
ADVERTISEMENT


{{#category_index:A|active}} 1. A system or circuit that includes an energy source. Often pertains to electronic elements such as amplifiers and filters. Compare passive. 2. A method which involves artificially induced signals. For example, see controlled-source electromagnetics. 3. A positioning system that involves transmission from the mobile station that is to be located.