navigation acronyms, abbreviations and definitions - International ...

PWSA Ports and Waterways Safety Act (US)
PWSCG Public Weather Service Commissioning Group
PZ-90 Soviet geocentric co-ordinate system used by GLONASS (SGS90)
Q quadrature component
QAR quick-access recorder (air)
QBC Quality Bus Corridor (initiative in Glasgow)
QCA Qualifications and Curriculum Authority (UK)
Formed in 1997 by the Education Act 1997.
QDM magnetic bearing to a DF station
QDR magnetic bearing from a DF station
QFE atmospheric pressure at aerodrome elevation
QFI qualified flying instructor
QFN quad-flat no-leads (ic packaging)
QFU runway orientation (magnetic)
QGH controlled descent through cloud
QGO airfield closed due to weather
QHM Queen’s Harbour Master
QinetiQ The private arm of DERA from 2 Jul 01
A nonsensical name taken from the Greek ‘kinetikos’ - to move.
QINS QinetiQ Integrated Navigation Simulation
QNH atmospheric pressure at sea level
QoS quality of service
QPSK(m) quadrature phase shift keying (with chip rate of m x 1.023 Mcps)
QRH quick reference handbook (eg with AOM)
QSW quiet space weather (assumption for GPS ionospheric delay mode;)
QSY change frequency
QTAS QinetiQ Transfer Alignment Simulation
QTE true bearing from DF station
QUATTRO Quality Approach in Tendering/Contracting Urban Public Trans Ops
An EC project Dec 96 - May 98.
QZSS Quazi-Zenithal Satellite System (Japan)
3-satellite positioning system to supplement and interoperate
with GPS. First launched Sep 10, the 2nd & 3rd due in 2012.
R ºRelative
R-GEO GEO ranging
GEO-based GPS-like ranging signal (as in EGNOS).
R-IORS re-entrant integrated optical rotation sensor
R/T (RT) radio telephony
R&D research and development
R&E research and engineering
R&RNAV Research and Radionavigation Directorate (GLAs)
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