Frequency hopping is one of two basic modulation techniques used in spread spectrum signal transmission. It is the repeated switching of frequencies during radio transmission, often to minimize the effectiveness of 'electronic warfare' - that is, the unau ... Home > Networking Definitions - Frequency-hopping spread spectrum...
|
searchnetworking.techtarget.com/sDefinition/0,,sid7_gci...
searchnetworking.techtarget.com/sDefinition/0,,sid7_gci525695,00.html
|
|
Hedy Lamarr - Wikipedia, the free encyclopedia
|
|
Hedy Lamarr (November 9, 1914 – January 19, 2000) was an Austrian-born American actress and scientist. Though known primarily for her acting (she was a major MGM contract star), she also co-invented ...
en.wikipedia.org/wiki/Hedy_Lamarr
|
|
|
The contribution of configurational entropy to the effective hopping frequency of ionic transport in amorphous systems is discussed. ... The contribution of configurational entropy to the effective hopping frequency of ionic transport in amorphous systems is discussed. The effective rate of ion hopping has been extracted...
|
www.medscape.com/medline/abstract/16229598
|
|
|
|
|
As in bipedal hopping, the force-displacement relationship was more springlike at the preferred rate and +20% than at -20%. Given the prevalence of unilateral stance during walking, running, and skipping, findings related to unipedal hopping may be useful in the rehabilitation or conditioning of lower extremities.
|
www.medscape.com/medline/abstract/12509167
|
|
|
|
Frequency Hopping is the winner of the 2007 STAGE International Script Competition and was developed, in part, through the University of California, Santa Barbara, STAGE Project by the Professional Artists Lab (Nancy Kawalek, Director) and the California NanoSystems Institute.
|
www.hourglassgroup.org/frequency.html
www.hourglassgroup.org/frequency.html
|
|
|
The Inventor of Frequency Hopping, a Web Technology ... By the 1950's, the patent on the device had expired when engineers at Sylvania "re-discovered" frequency-hopping. They called it "spread spectrum." These electronic devices were designed for use during the Cuban Missile crisis in the sixties.
|
www.hypatiamaze.org/h_lamarr/scigrrl.html
|
|
The idea itself was not new, but her concept of "frequency hopping" was. Lamarr brought up the idea of radio control. Antheil's contribution was to suggest the device by which synchronization could be achieved.
|
www.inventions.org/culture/female/lamarr.html
|
|
In Frequency Hopping Spread Spectrum systems, the carrier frequency of the transmitted signal changes in accordance with the pseudo-random code sequence. ... Frequency Hopping Spread Spectrum: In general, modern industrial wireless modems utilize frequency hopping spread spectrum (FHSS) technology rather than direct...
|
generalcommunications.com/communications/frequency_hopp...
generalcommunications.com/communications/frequency_hopping.htm
|
|
In frequency hopping systems, the carrier frequency of the transmitter abruptly changes (or hops) in accordance with a pseudo random code sequence. The order of frequencies selected by the transmitter is dictated by the code sequence.
|
www.fas.org/man/dod-101/sys/ac/equip/docs/A2C2S_Tutoria...
www.fas.org/man/dod-101/sys/ac/equip/docs/A2C2S_Tutorial_RevA1a/tsld052.htm
|
|
