uhf tacsat /dama multi-service tactics, techniques ... - UHF-Satcom.com

etween transmitting terminals.
half-duplex A terminal characteristic that allows receipt and
transmission of signals, but not both at the same time.
high power
satellite
A satellite with greater than 100 watts of transponder radio
frequency transmitting power.
home channel The control channel that a terminal uses to receive its
CCOW messages and transmit its RCCOW and other system
support messages.
hyperspectral An instrument capability using many very narrow spectral
frequency bands (300 or more), enabling a satellite-based
passive sensor to discriminate specific features or
phenomena on the body being observed (e.g., Earth).
inclination angle The angle between a satellite's orbital plane and the earth's
equatorial plane.
indicator A symbol, flag, or signal that serves to identify a specific
state or item.
input/output data
rate
The rate, in units of bps, at which bits are sent to or received
from an I/O device.
Internet Interconnection of thousands of networks linked by a
common set of technical protocols which make it possible for
users to communicate and use services.
interoperability The ability to have applications and computers from
different vendors work together on a network.
key generator
identification
number
key generator
memory
key generator net
number
A unique 16-bit ID number associated with the OW
encryption/decryption device. The KG ID number is the
same as the terminal base address.
A 3-bit code that defines one of eight memory locations in
which the KG keys used for OW encryption and decryption
are stored.
A 5-bit code used to prepare the KG, which encrypts the
CCOW and RCCOW.
local area network A group of computers and related equipment connected
locally, usually within a single building, by a
communications channel capable of sharing information
among several users.
link test time-slot A shared time-slot used by a terminal to evaluate its link
conditions or measure two-way range to the satellite. A link
test is performed only in odd-numbered frames; range
measurements are performed only in even-numbered
frames.
local (1) Operations within a channel or group of channels in a
single footprint controlled by one PCC. (2) Initiations by an
equipment operator.
local footprint The satellite coverage area of a PCC and the terminals
operating under its control.
Glossary-17