navigation acronyms, abbreviations and definitions - International ...

MLWN mean low water neaps
MLWS mean low water springs
MM map-matching
MM MasterMap (Ordnance Survey trademark)
MmaxCT maximum corrective maintenance time
MMC multi-media card (typical 64 Mb)
MMD mean mission duration
MMD moving map display
MMG micro-mechanical gyro (a form of MEMS)
MMI man-machine interface (nowadays replaced by 'HMI')
MMIC microwave monolithic integrated circuit
MMLE method of maximum likelyhood estimation (adaptive filter technique)
MMLS Mobile Microwave Landing System
MMR multi-mode receiver
MMS Multimedia messaging service (mobile phones)
MMSI Maritime Mobile Service Identity (Code) (GMDSS DSC)
MMW millimeter-wave (eg radar)
MMW multipath mitigation window
MN magnetic north
Northerly direction of the horizontal component of the earth’s
magnetic field.
MNC mobile network code (phone network)
MNE Marine Navigation Equipment (Sub-Group of UK SON Ctee)
MNM mathematical navigation monitor
Provides position estimate with associated errors by data fusion of
dissimilar sensors.
MNP Master Navigation Plan (US)
MOA memorandum of agreement
MOB man overboard
MoBIC Mobility of Blind and Elderly People Interacting with Computers
MoC memorandum of cooperation
MOCA minimum obstruction clearance altitude (US)
MOD Ministry of Defence
Mode SSR mode of operation
Mode A - normal ATC codes, Mode C - encoded flight levels, Mode S -
selective interrogation and downlinking of aircraft parameters (DAPs).
Mode S Mode Select - SSR using selective addressing
Selection based on ICAO 24-bit unique address for each aircraft.
Also allows downlinking of flightplan callsign and altitude in 25 ft
increments. Includes ELS and EHS. Mandatory in Europe for IFR
flights from 31 Mar 05.
modem modulator-demodulator
MOEMS micro-opto-electromechanical system (eg micro IMU)
90
March 2012