navigation acronyms, abbreviations and definitions - International ...

TCAS Traffic-alert and Collision Avoidance System (=ACAS in Europe)
TCAS-I generates conflicting traffic advisories (TAs). TCAS-II also
gives collision avoidance instructions (RAs) in vertical plane. TCAS-II
with sofware 7.0 mandated from Mar 01.
TCC Technical Co-operation Ctee (IMO)
TCC Traffic Control Centre (UK Highways Agency)
TCG Training Consultation Group (EUROCONTROL)
TCH threshold crossing height
TCN Terminal Control North (UK NATS)
TCN terrain contour navigation
TCO total cost of ownership
TCP/IP Transmission Control Protocol/Internet Protocol
TCPA target closest point of approach
TCPA time to closest point of approach
TCS track control system
TCu towering cumulus cloud
TCXO temperature compensated/controlled crystal oscillator
TD time difference
TDA temporary danger area (ATC)
TDD time division duplex(ing) (eg GSM phones)
TDEV time deviation
TDF two degrees of freedom
TDM Technology Demonstration Missions (NASA)
TDMA time-division multiple-access
TDMS Traffic Demand Management Strategy (UK DTLR)
TDOA time difference of arrival
TDOP time dilution of precision
The factor by which accuracy of receiver clock bias determination is
degraded by geometrical considerations.
TDP touch-down point (landing aircraft)
TDS Technology Demonstration Systems (Phase of GAGAN - to 2005)
TDS Technology Development Strategy (US, eg GPS)
TDWR terminal doppler weather radar
TEB Tender Evluation Board (ESA)
TEC total electronic content (typically of ionosphere)
Integrated value of electronic concentration - delay of GPS signal is
directly proportional to TEC.
TECU total electronic content (of ionosphere - measured vertically (UP))
TED theoretical escape direction (animal navigation)
Tele-parking Use of SMS to be remotely charged for parking
TELEPAY EC project for innovative universal transport payment system (FP5)
TEM Threat and Error Management (IATA)
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