A system and associated method where a vertical flight dynamic sensor is stabilized
using pitch rate gyro information combined with azimuth rate gyro information corrected
by scaling the azimuth rate gyro information in accordance with feedback derived
from the difference between the vertical flight dynamic sensor signal and the corrected
vertical flight dynamic output. In one embodiment, the vertical flighy dynamic
sensor may be a vertical speed sensor. In another embodiment, the vertical flight
dynamic sensor may be a pitch attitude sensor derived from the difference between
an inertial based acceleration signal and a velocity based acceleration signal.
The velocity based acceleration signal may be based on airspeed or GPS velocity.