AvMap EKP IV, User Manual

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97 User Manual
DATUM A method of assigning position coordinates to real-world locations. Based on an underlying ellipsoidal
model of the earth and subject to other scientific assumptions. Identified by a unique name, such as WGS84 or
NAD27.
DEFAULT The value or setting automatically chosen by the EKP-IV unless directed otherwise.
DEGREE 1/360th of a circle. On a Great Circle, 1° = 60 min.
DGPS DIFFERENTIAL GPS
- Provides even greater positioning accuracy than standard GPS.
DME
Distance Measuring Equipment
ELEVATION Altitude above sea level (MSL). Usually refers to field Elevation of an airport. Also refers to a
satellite’s height above the horizon.
EPHEMERIS DATA Data on the specific location of a satellite that is collected from that satellite when it is
first located and is
periodically updated while the satellite is being tracked. Remains current for up to 2 hours.
ETA ESTIMATED TIME OF ARRIVAL
- The estimated time of day the destination Waypoint will be reached,
based on your current speed and the distance to destination.
ETE ESTIMATED TIME ENROUTE - The estimated time needed to reach your destination, based on your
current speed and the distance to destination.
FILE It is collection of information (of the same type) stored on a User COMPACT FLASH. Each file must
have a unique name, ideally one that describes its contents. File names are kept in a directory on each User
COMPACT FLASH.
FP FLIGHT PLAN
- A planned course of travel, with one to twenty-five legs, each with its own origin and
destination.
FP LEG The line connecting two waypoints within a Flight Plan.
FSS FLIGHT SERVICE STATIONS - Provide pilot briefings en route.
FUEL BURN RATE Fuel burn rate in a cruise configuration.
GLIDE SLOPE The desired descent path for Vertical Navigation.
GPS GLOBAL POSITIONING SYSTEM
- A satellite based navigation system operated by the US Depart-
ment of Defense. It operates 24 hours a day, 365 days a year under any weather conditions.
GQ GEOMETRIC QUALITY - A measurement of the geometry of the satellites used to triangulate the posi-
tion. A low GQ is inaccurate and generates a GQ warning. Navigation data should be used with caution when
the GQ warning appears.
GREAT CIRCLE Distance measured along the curved surface of the earth. Over long distances, a Great Circle
distance is more accurate than a Rhumb Line distance measured from a mercator chart.
GS GROUND SPEED
- The speed over the ground; can vary from air speed as it is affected by the prevailing
winds.
HDG HEADING - The direction your aircraft is facing, defined as an angle from true or magnetic north.
HDOP HORIZONTAL DILUTION OF PRECISION - It is the index for position-fixing accuracy. The
smaller the HDOP value, indicates a better position calculation.
HOME (mode) The Home (called also Screen Amplifier) mode is used to keep the fix position within the visible
map. The map is scrolled and redrawn automatically when the fix position is moved. When this mode is active
the cursor is hidden.
ICON A symbol shown on any display as a representation of a Waypoint .
IDENTIFIER An abbreviated name that is assigned to an airport or navaid. The identifier may be any combina-
tion of letters and numbers, up to five characters in length.
INT INTERSECTION - A Waypoint defined by any combination of courses or radials between two or more
navaids. Enroute and terminal intersections are part of the EKP-IV Database.
KTS KNOTS
- One Knot is a unit of speed equal to one Nautical Mile per hour.
LANDMARKS Any prominent object such as monument, building, silo, tower, mast, on land which can be
used in determining a location or a direction
LAT LATITUDE - The distance north or south of the equator, measured in an arc with the equator being 0° and
the poles being 90°.
LON LONGITUDE - The distance east or west of the Prime Meridian (0°), which intersects Greenwich,
England. The range is 0°–180°E, moving east of 0° and 0°–180°W, moving west of 0°.
LORAN
The Loran chains are groups of transmitting stations that use timed radio pulse transmissions.