Goniometer
GOS GPADIRS GPIB GPNS GPS
GPSSU GPU GPWC GPWS Gradient
Gray Code
Ground Wave GRP GS
G/S GSE GSP GSV GT
A device that combines the two signals from two loop antennas. The goniometer (or resolver) contains two fixed coils and one rotating coil. The rotating coil is connected to the ADF bearing indicator needle to indicate the relative bearing from the aircraft to the NDB station. The mechanical position of the rotor represents the bearing of the station,and the position is electrically transmitted to the RMI.
Grade of Service
Global Positioning,Air Data,Inertial Reference System
General Purpose Instrument Bus
Ground Proximity Warning System
(1)
 Global Positioning System (see NAVSTAR)

(2)
 Global Positioning Satellite Global Positioning System Sensor Unit Ground Power Unit Ground Proximity Warning Computer Ground Proximity Warning System The rate at which a variable quantity increases or

decreases.
Special binary code used to transmit altitude data
between framing pulses of a transponder reply. A
cyclic code having only one digit change at a time.

Used in Mode C to transmit aircraft barometric alti-tude. Also known as Gilham code.
A radio wave that travels along the earth.s surface.
Geographic Reference Point

(1)
 Glideslope

(2)
 Ground Speed
Glideslope
Ground Support Equipment
Glare Shield Panel
Gray Scale Voltage(s)
Greater Than

GTA  General Terms Agreement 
GTC  Data Link Ground Terminal Computer 
GTR  General Technical Requirements