| A | B | C | D | E | F | G |

| H | I | J | K | L | M | N |

| O | P | Q | R | S | T | U |

| V | W | X | Y | Z |

K, L

karst - An area of irregular limestone in which erosion has produced fissures, sinkholes, underground streams and caverns.

kinematic GPS - Observations while a receiver is in motion.

knot - A unit of speed of one nautical mile per hour, equal to 1.15 statute mile per hour (1.85 kilometers per hour).

LAAS - see Local Area Augmentation System

lagoon - A shallow body of water, especially one separated from a sea by sandbars or coral reefs.

latitude - The distance north or south of the equator of a point on the earth's surface.

LBS - Location-Based Services - A service which uses knowledge provided about where a user is located in order to deliver information relevant to the user's position.

leg - The portion of a route between waypoints.

lidar - Also called laser radar - A method of detecting distant objects and determining their position, velocity, or other characteristics by analysis of pulsed laser light reflected from their surfaces.

Local Area Augmentation System - A specialized type of DGPS to support aircraft landings in a local area (32KM). The first system is scheduled to be operational by late 2006.

location-based services - See LBS.

longitude - The distance east or west of the prime meridian of a point on the earth's surface.