Satellite Basics Term Glossary - China Starwin Science&technology Co.Ltd

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Satellite Basics Term Glossary

AES

Advanced Encryption Standard is an encryption standard comprised of three blocks of ciphers AES-128, AES-192, and AES-256

ACM

Adaptive Coding and Modulation uses an algorithm to dynamically change the coding and modulation scheme based on atmospheric conditions and network configurations

APSK

Amplitude and Phase Shift Key is a modulation scheme that changes the amplitude and phase of the carrier wave

Analog transmission

Transmission of information using a continuous signal that varies based on amplitude, phase, or other proportion

Antenna

Equipment that typically transmits and receives electromagnetic waves, usually referred to as the satellite dish

Aperture

The crosssectional portion of the satellite antenna that transmits and receives the signal

ATDMA

Adaptive Time Division Multiple Access is a channel access method that allows the return channel configuration to optimally change based on link conditions and spectral degradation

Attenuation

Fixed signal loss due to cabling or reduction of signal strength due to atmospheric conditions (see also Rain Fade)

BUC

Block Up Converter. Used for uplink satellite transmission that converts a band from a lower frequency to a higher frequency

Bandwidth

A range of frequencies within a spectrum, expressed in Hertz. Can also be the data transfer rate or throughput, expressed in bits per second

BGP

Border Gateway Protocol is a core routing protocol of the Internet

Bit Rate

Speed of transmission, measured in bits per second (bps)

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