navigation acronyms, abbreviations and definitions - International ...

LMES land mobile earth station
LMM locator middle marker (ILS)
LMSE least mean square error
LMT local mean time
The arc of the celestial equator between the lower branch of the local
celestial meridian and the hour circle of the true sun.
LMU location measurement unit
LMU location monitoring unit (to synch ‘time’ in a cellular system for nav)
LNA low noise amplifier
LNAV lateral navigation
An initial WAAS service to give non-precision approach down to 400
-500ft. No vertical guidance. Requires 556 m HAL protection.
LNAV/VNAV lateral and vertical navigation
An initial WAAS service to give precision approach down to 350ft and
1 n mile. May also be referred to as non-precision approach with
vertical guidance. Requires 40 m HAL and 12 m VAL protection.
LNB low-noise block (antenna component)
LNM Local Notice to Mariners
LNV land navigation vehicle (for testing airborne systems - USAF)
LO local oscillator
LOA length overall
LOA letter of agreement
LOC localiser (azimuth guidance portion of ILS)
LOCOG London Organising Committee of the Olympic Games
LOCOLOC LOw-COst LOCcalisation (for train integrity (ESA))
LOCOPROL (or just LOCO)
LOw-COst satellite-based train location system for signalling and train
PROtection for Low density traffic railway lines. EC FP 5, 2001-04.
Locus Pinpoint project on location contect tools for 3G services
City University & The Geoinformation Group.
LOGIC Loran GNSS interoperability channel
LOIS Land Ocean Interaction Study
LOM locator outer marker (ILS)
Lon (LON) (l) longitude
Angle at the pole between prime meridian and meridian of a point,
labelled E or W. May be geographic, geodetic, geocentric or
astronomical.
LOP line of position (also PL)
LOPAS London Olympics and Paralympics Airspace Steering Group (CAA)
LOR legal and organisational review (EC)
LOR Long-term Operations & Replenishment (phase of Galileo fm 2008)
LORADD eLoran receiver (Reelektronika)
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March 2012