Details
The Honeywell Laserref Innertial Reference System (IRS) uses ring laser gyros and servo accelerometers to measure horizontal, vertical and angular acceleration in the Cartesian aircraft reference system. The IRS internal computer determines aircraft position, attitude and velocity from the measured accelerations using advanced Kalmann filtering techniques to reduce drift errors from signal integration.
The Flight Management Computer (FMC) uses IRS, GPS and other navigation system to calculate a high precission blended position. Output from the IRS and FMC is used in calculations of aircraft motion and wind velocities.
Error Analysis