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pilot tone

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pilot tone

[′pī·lət ‚tōn]
(communications)
Single frequency transmitted over a channel to operate an alarm or automatic control.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive
Nonblind channel estimation is the most traditional channel estimation method, which mainly makes use of the pilot signal response channel's features on transmitting terminal.
When retro-directive beamforming is applied to space solar power, ground station on the earth sends pilot signal to the satellite and the satellite adjusts its power beam's direction to be opposite to the pilot signal's incoming direction.
The improved architecture focuses the transmission range and node formation and uses (the same) pilot signal assisted mac with impulse radio at Physical layer.
As in the previous case, the microprocessor-controlled converter sets the pilot signal to a current half-wave of amplitude 1 A and variable frequency 10 Hz-200 Hz.
Because the control of pilot signal for the level 1 charging station, EVSmartPlug, takes place within the PEV's trickle charge cable, the automatic reset of GFCI is not required by UL certification.
The maximum execution cycle is 129 cycles when only one of 128 subcarriers is dedicated to the pilot signal. The total execution cycles is at most 387 cycles since one cycle initialization and one cycle termination process are included.
The JPC Series works as a standard check valve, but can be operated with an air pilot signal providing for "free flow" in the normally checked position.
This input pressure sends a pilot signal to the relay valve in order to modulate air brake pressure on the other end.
These timers automatically reset when a new pilot signal is introduced.
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