3D AUTONOMOUS INTEGRITY MONITORED EXTRAPOLATION NAVIGATION

摘要

In the 3D AIME mechanization (1) measurements of altitude above mean sea lev el are first referenced to AIME computer altitude by adder (3) and then pre- filtered by the pre-filter (5). The computer altitude is obtained from computing unit (11) through switch (4). The pre-filtered measurements pass through switch (6) to AIME Kalman filter (7) where they are used as observations in obtaining estimates of the barometric offset at the runway a nd the barometric scale factor offset from the runway to the aircraft present altitude.