| 释义 |
target signal target signal[′tär·gət ‚sig·nəl] (electromagnetism) The radio energy returned to a radar by a target. Also known as echo signal; video signal. target signalThe radar energy returned to a radar by a target. Also called an echo signal or a video signal. The amount of this energy is called received power. The size of the echo on the PPI (plan position indicator) is a direct function of the received power. See echo. |