navigation acronyms, abbreviations and definitions - International ...

LVTO low visibility take-off
LW low water
lx lux (illuminance in lm/m 2 )
lyµ micro (SI unit multiplier of 10 -6 )
lyµ-FORS micro-fibre-optic rate sensor
lyµ-XANES microscopic X-ray absorption near-edge structure
lyµ-XRF microscopic X-ray fluorescence
lyµT micro Tesla (earth’s magnetic field is earth is ~50)
lzµ Earth’s gravitational constant (typically 3,99 x 10 14 m 3 /s 2 )
lzµV/m microvolts per metre
m metre
m milli (SI unit multiplier of 10 -3 )
M-ADS Modified Automatic Dependent Surveillance
Mandatory for helicopters in Norwegian Sector of North Sea from
Apr 99.
M-band NATO radar band > 60 GHz = < 5 mm
M-Code Military Code for GPS (military signal - spec produced in 2000)
Due to be used with last 12 Block IIR satellites and Block IIFs on L1
and L2
M-GEX Global Multi-GNSS Experiment (IGS)
M-Notice Merchant Shipping Notice (UK)
M-Spot (Mspot/M Spot) Mil GPS way of focussing sig to give higher power
m/s metres per second
M&A Mach
M&A magnetic
M&A mega (SI unit multiplier of 10 6 )
M&A nautical mile on charts under IHO Spec of 1982
Approx 1,852 m or 6,080 ft.
M&C monitor and control station
M&S models and simulation
M&T measurement & testing
M2M machine-to-machine (comms)
MA map aiding
MAC medium access control
MAC miniature atomic clock
Mach No (M) Ratio of TAS to local speed of sound
MAFF Ministry of Agriculture, Fisheries and Food (UK - now DEFRA)
mag magnetic
Mag magnitude (of star)
MAGES Mature Applications of Galileo for Emergency Scenarios (GSA)
MAGR Miniaturised Airborne GPS Receiver (US - Rockwell)
MAGVAR magnetic variation
84
March 2012