frequency-hopping

frequency-hopping

An irregular and unpredictable continuous change of frequency of radar or other military electronics. Frequency hopping is an electronic counter-countermeasure.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
By incorporating the RIC-U into voice networks, allied partners can use their native radio communications equipment, unique encryption, and frequency-hopping techniques to speak with U.S.
Real-time spectrum analyzers are ideal for sensing signals that vary dynamically in amplitude or are agile in frequency, such as pulsed radar systems, frequency-hopping spread spectrum radios, and pulse modulated radios, multi-signal environments, or unwanted signals such as unintentional self-interference, intentional interference (jammers), and listening devices (bugs).
In a cunning marriage of music and math, Lamarr and Antheil developed frequency-hopping technology that repeatedly switched the beeps' patterns during radio transmission to reduce potential interference and avoid interception.
Frequency-hopping (FH) communication is widely used in the military communications, due to its high confidentiality, antijamming capacity, low susceptibility, and strong networking capabilities [1-3].
What followed thereafter was the co-invention of frequency-hopping spread-spectrum with George Antheil, which allowed the interception of radio-controlled torpedoes, and led to the evolution of technology that is now synonymous with everyday computing - GPS, Bluetooth, WiFi, CDMA.
Most radios use either direct-sequence spread spectrum (DSSS) or frequency-hopping spread spectrum (FHSS) which can distort the data signal by adding random elements to the signal to help distinguish it from other RF noise.
The most significant invention that she worked on with George Antheil, her composer colleague, was the remote-controlled wireless torpedo, which was navigated by a jamproof, frequency-hopping command signal.
The ITT Exelis Spearhead VHF portable handheld tactical radio provides dismounted soldiers secure, frequency-hopping voice and packet data with integrated GPS in a small, lightweight package that is fully interoperable with the international SINCGARS.
The communication range of frequency-hopping communication has pseudo-randomness and frequency range uses the amount of frequency-hopping communication has security.
* A 1-W, frequency-hopping spread spectrum (FHSS) transceiver.

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