- Industry: Telecommunications
- Number of terms: 29235
- Number of blossaries: 0
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ATIS is the leading technical planning and standards development organization committed to the rapid development of global, market-driven standards for the information, entertainment and communications industry.
The reduction of desired signal gain as a result of receiver reaction to an undesired signal. Note: The gain reduction is generally due to overload of some portion of the receiver (e.g., the AGC circuitry) resulting in desired signal suppression because the receiver will no longer respond linearly to incremental changes in input voltage.
Industry:Telecommunications
The recovery, from a modulated carrier, of a signal having substantially the same characteristics as the original modulating signal.
Industry:Telecommunications
The recovery of information from an electrical or electromagnetic signal. Note: Conventional radio waves are usually detected by heterodyning, i.e., coherent reception/detection. In this method of reception/detection, the received signal is mixed, in some type of nonlinear device, with a signal from a local oscillator, to produce an intermediate frequency, i.e., beat frequency, from which the modulating signal is recovered, i.e., detected. The inherent instabilities of available optical sources have, until relatively recently, prevented practical use of coherent reception/detection in optical communication receivers. At present, coherent optical receivers, using sophisticated technology, are just beginning to emerge from the laboratory into the field. Virtually all existing optical receivers employ direct detection; that is, the received optical signal impinges directly onto a detector. Direct detection is less sensitive than coherent detection. 2. In tactical operations, the perception of an object of possible military interest but unconfirmed by recognition. 3. In surveillance, the determination and transmission by a surveillance system that an event has occurred.
Industry:Telecommunications
The reconstruction of an earlier version of a file by using a newer version of data recorded in a journal.
Industry:Telecommunications
The reciprocal of the sampling rate, i.e., the interval between corresponding points on two successive sampling pulses of the sampling signal.
Industry:Telecommunications
The reciprocal of the Nyquist interval, i.e., the minimum theoretical sampling rate that fully describes a given signal, i.e., enables its faithful reconstruction from the samples. Note: The actual sampling rate required to reconstruct the original signal will be somewhat higher than the Nyquist rate, because of quantization errors introduced by the sampling process.
Industry:Telecommunications
The recertification or replacement of a certificate authority's public/private key pair.
Industry:Telecommunications
The reception of emissions from a space station in the broadcasting-satellite service by simple domestic installations and in particular those possessing small antennae.
Industry:Telecommunications
