- 産業: Telecommunications
- Number of terms: 29235
- Number of blossaries: 0
- Company Profile:
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.
In secure communications, dividing responsibility for sensitive information so that no individual acting alone can compromise the security of the data processing system.
Industry:Telecommunications
In secure communications, an agreed entity (usually a third party) that issues signatory certificates to organizations participating in this authorization system.
Industry:Telecommunications
In secure communications, a condition under which two or more entities separately have key components that, individually, convey no knowledge of the resultant cryptographic key. 2. Separation of data or information into two or more parts, each part constantly kept under control of separate authorized individuals or teams so that no one individual or team will know the whole data.
Industry:Telecommunications
In satellite communications, the quality or degree of visibility of a satellite to a ground station; i.e., the degree to which the satellite is sufficiently above the horizon and clear of obstructions so that it is within a clear line of sight by an Earth terminal. Note: A pair of satellite Earth terminals has a satellite in mutual view when both have unobstructed line-of-sight contact with the satellite simultaneously.
Industry:Telecommunications
In satellite communications, the process of locking tracking equipment on a signal from a communications satellite. 2. The process of achieving synchronization. 3. In servo systems, the process of entering the boundary conditions that will allow the loop to capture the signal and achieve lock-on.
Industry:Telecommunications
In satellite communications, the coverage that occurs when the satellite-to-Earth beam is sufficiently wide to cover all of the surface of the Earth exposed to the satellite, i.e., the footprint is as large as it can possibly be from a geographic standpoint.
Industry:Telecommunications
In satellite communications, that portion of the satellite link that is in orbit.
Industry:Telecommunications
In satellite communications, that portion of the Earth's surface over which a satellite antenna delivers a specified amount of signal power under specified conditions. Note: The limiting case of footprint area is somewhat less than one-half the Earth's surface, and depends on the altitude of the satellite. #ifootryc#
Industry:Telecommunications
In satellite communications systems, the establishment of contact with a communications satellite space station. Note: An example of satellite access is access at the moment at which an Earth station commences to use a satellite space station as a signal repeater, i.e., to use its transponder. Each radio frequency (rf) carrier that is relayed by a satellite space station at any time occupies an access channel. Accesses, i.e., channels, are distinguishable by various system parameters, such as frequency, time, or code.
Industry:Telecommunications
In satellite communications systems, the assembly of equipment and facilities necessary to integrate an Earth terminal into a communications network. Note: The Earth terminal complex includes the Earth terminal and its support equipment and any required interconnect facilities and their support equipment. It does not include facilities at the site that are not necessary to establish and integrate the satellite links with the network.
Industry:Telecommunications
