Final answer:
IG1 / IG2 refer to inertial guidance, GP1 / GP2 represent global positioning, and IN1 / IN2 indicate inertial navigation in FMS/1 navigation solutions.
Step-by-step explanation:
IG1 / IG2 in the context of FMS/1 navigation solutions refers to Inertial Guidance. Inertial guidance systems use accelerometers and gyroscopes to measure the motion and orientation of an aircraft. IG1 represents the primary inertial guidance system, while IG2 is the secondary or backup system.
GP1 / GP2 stands for Global Positioning. GP1 is the primary GPS (Global Positioning System) receiver, which uses satellites to determine the precise location of the aircraft. GP2 is the secondary or backup GPS receiver.
IN1 / IN2 refers to Inertial Navigation. Inertial navigation systems use accelerometers and gyroscopes to calculate the position, orientation, and velocity of an object. IN1 is the primary inertial navigation system, while IN2 is the secondary or backup system.