Glossary
Glossary-2 99-145912-A
F
FPGA Field Programmable Gate Array ,
G
GNSS Global Navigation Satellite System, e.g. GPS. ,
GPL General Public License
GPS Global Positioning System. A system of satellites, computers, and receivers that is able to
determine the latitude and longitude of a receiver on Earth by calculating the time
difference for signals from different satellites to reach the receiver.
H
HDT HeaDing True, NMEA sentence.
HTTPS HyperText Transfer Protocol Secure.
I
IEC International Electrotechnical Commission. The international standards and conformity
assessment body for all fields of electrotechnology.
IMSO International Mobile Satellite Organisation. An intergovernmental organisation that
oversees certain public satellite safety and security communication services provided via
the Inmarsat satellites.
ISM Inertial Sensor Module
K
KDM Keyboard and Display Module of the ACU
L
LAN Local Area Network
LEN Load Equivalent Number
LGPL Lesser General Public License
LNB Low Noise Block. A device used to amplify or boost the weak received signal without
amplifying the noise signals (hence the “low noise” part of LNB) and to convert the high
frequencies of the signal into lower frequencies, a process called down converting, for
conveyance to the indoor equipment (demodulator) for processing.
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