heterodyne interference

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• heterodyne — 1. adjective Of, two oscillations, having two slightly different frequencies such that, when combined, they produce a beat 2. noun a) The beat so produced b) Either the sum or …   Wiktionary

• heterodyne —   n. Radio, production of beats by superimposition of oscillations of slightly different frequency upon the waves being received; use of this beat frequency in radio reception; interference, especially whistle, due to heterodyne; v.i. produce… …   Dictionary of difficult words

• heterodyne — het·er·o·dyne || hetÉ™rəʊdaɪn adj. consisting of or produced by combined radio waves n. detection technique used widely in radio which involves combining the measured wave with a wave of different frequency to produce frequencies equal to… …   English contemporary dictionary

• heterodyne — /ˈhɛtərədaɪn/ (say hetuhruhduyn), /ˈhɛtrə / (say hetruh ) adjective 1. denoting or relating to a method of receiving continuous wave radiotelegraph signals by impressing upon the continuous radiofrequency oscillations another set of… …  

• Optical heterodyne detection — is an important special case of heterodyne detection. In heterodyne detection, a signal of interest at some frequency is non linearly mixed with a reference local oscillator (LO) that is set at a close by frequency. The desired outcome is the… …   Wikipedia

• Noise-immune cavity-enhanced optical heterodyne molecular spectroscopy — (NICE OHMS) is an ultra sensitive laser based absorption technique that utilizes laser light to assess the concentration or the amount of a species in gas phase by absorption spectrometry (AS). Contents 1 Principles 1.1 Types of signals 1.2… …   Wikipedia

• Noise-Immune Cavity-Enhanced Optical-Heterodyne Molecular Spectroscopy — (NICE OHMS) is an ultra sensitive laser based absorption technique that utilizes laser light to assess the concentration or the amount of a species in gas phase by absorption spectrometry (AS). Principles The NICE OHMS technique combines in a… …   Wikipedia

• Radio Caroline — is a European radio station that started transmissions on Easter Sunday 1964 from a ship anchored in international waters off the coast of Felixstowe, Suffolk, England. [ [http://www.radiocaroline.co.uk/history2.asp Don t Get Mad, Get Even] ] It… …   Wikipedia

• Beat (acoustics) — In acoustics, a beat is an interference between two sounds of slightly different frequencies, perceived as periodic variations in volume whose rate is the difference between the two frequencies.When tuning instruments that can produce sustained… …   Wikipedia

• Geneva Frequency Plan of 1975 — The Geneva Frequency Plan of 1975 (GE75) is the internationally agreed frequency plan which was drawn up to implement the provisions of the Final Acts of the Regional Administrative LF/MF Broadcasting Conference (Regions 1 and 3) held in Geneva,… …   Wikipedia

• Carrier current — is a method of low power AM broadcasting that does not require a broadcast license in the United States, but is allowed on the campus of any school, so long as the normal FCC Part 15 Rules are adhered to when measured at the edge of the campus.… …   Wikipedia