frequency standards

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• Time and Frequency Standards Laboratory — The Time and Frequency Standards Laboratory is a part of the National Physical Laboratory in New Delhi which maintains and calibrates the Indian Standard Time.Features of the Time and Frequency Standards Lab include: * Four caesium and rubidium… …   Wikipedia

• Frequency comb — A frequency comb is the graphic representation of the spectrum of a mode locked laser. An octave spanning comb can be used for mapping radio frequencies into the optical frequency range or it can be used to steer a piezoelectric mirror within a… …   Wikipedia

• Frequency standard — A frequency standard is a stable oscillator used for frequency calibration or reference. A frequency standard generates a fundamental frequency with a high degree of accuracy and precision. Harmonics of this fundamental frequency are used to… …   Wikipedia

• Frequency-Hopping Spread Spectrum — Pile de protocoles 7 • Application 6 • Présentation 5 • Session 4 • …   Wikipédia en Français

• Frequency allocation — The electromagnetic spectrum is an aspect of the physical world which, like land, water, and air, is subject to usage limitations. Use of radio frequency bands of the electromagnetic spectrum is regulated by governments in most countries, in a… …   Wikipedia

• Frequency-shift keying — Passband modulation v · d · e Analog modulation AM · …   Wikipedia

• Frequency management challenges in military forces — Every military force has a goal to ensure and have permanent access in the spectrum of radio frequencies to meet its vital military tasks. This is based on strategies, doctrines and different policies that military forces adhere to.The nature of… …   Wikipedia

• Frequency assignment authority — In telecommunication, frequency assignment authority is the power granted an administration, or its designated or delegated leader or agency via treaty or law, to specify frequencies, or frequency bands, in the electromagnetic spectrum for use in …   Wikipedia

• Frequency-hopping spread spectrum — Pile de protocoles 7.  Application 6.  Présentation 5.  Session 4.  Tr …   Wikipédia en Français

• Two-Way Satellite Time and Frequency Transfer — (TWSTFT) is a high precision long distance time and frequency transfer mechanism used between time bureaux to determine and distribute time and frequency standards. As of 2003 TWSTFT is being evaluated as an alternative to be used by the Bureau… …   Wikipedia

• FSK standards for use in Caller ID and remote metering — Frequency shift keying is used over telephone lines for Caller ID and remote metering applications. There are several variations on this technology. ETSI FSK The European Telecommunications 1 and 2, and ES 200 778 1 and 2, the latter replacing… …   Wikipedia