... inertial space Accelerometers, however may not separate the total acceleration of the vehicle, the acceleration with respect to inertial space, from that caused by the presence of a gravitational field ... take this information and use triangulation to calculate the user's exact location Essentially, the GPS receiver compares the time a signal was transmitted by a satellite with the time it was ... has been determined, the GPS unit can calculate other information, such as speed, track, trip distance, distance to destination, etc 2.3 INS/GPS With the advantages and disadvantages of INS and...