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

demodulation phase-matched condition between a receiver's reference and
the desired signal.
nonprocessed
channel
nonregenerative
transponder
A channel capable only of receiving, amplifying, filtering,
limiting, frequency translating, and retransmitting a
received signal. (There is no signal processing.)
A transponder (e.g., a satellite repeater) in which digital
signals are not reconstituted.
Northern Lights A name for the aurora occurring over the North Pole.
offset quadrature
phase-shift keying
A form of offset quadrature phase-shift keying in which the
in-phase (I) and quadrature bit streams are offset in time by
one-half a symbol period, equal to the reciprocal of the data
rate.
operator The person who controls and operates a communications
terminal or controller.
orbit The path of an object that is moving around a second object
or point.
orderwire The portion of the DAMA (or TDMA) frame used for
transmission of management, control, and status
information among the channel controllers and terminal
users.
originator A person or terminal that initiates a communication.
packet For message service, the information transmitted in one
burst.
pad bits Pad bits are used both before and following user data when
insufficient user data is present to fill the data portion of a
burst.
passive ranging A process by which a terminal determines signal
propagation time to a satellite by means other than
transmitting a ranging signal.
pending service A queued service that is not blocked but is awaiting
availability of communications resources on the channel.
perigee Low point of an orbit.
polarization The property that describes the orientation of an
electromagnetic wave.
polar orbit A satellite orbit passing over both poles of the Earth.
During a 12-hour day, a satellite in such an orbit can
observe all points on Earth.
Glossary-19