METHOD OF CORRECTION OF COMPLEX INFORMATION NAVIGATIONAL SYSTEM FOR ANOMALY OF EARTH GRAVITATIONAL FIELD Russian patent published in 2006 - IPC G01C21/00 

FIELD: aviation instrumentation engineering.

SUBSTANCE: proposed method includes shaping of position, velocity and angular correction signals of complex information navigational system by Kalman filtration of difference in signals of measured and rated anomaly of Earth gravitational field in form of sum of stored signal of gravitational field anomaly corresponding to present position of object and vertical acceleration signal. Present magnitude of altitude is measured with the aid of altimeter of non-inertial structure and vertical velocity and acceleration signals are formed according to it. Then, signal of sum of gravitational anomaly and formed signal is shaped. Signal thus shaped is used for forming the position, velocity and angular correction signal.

EFFECT: enhanced accuracy of determination of navigation mission of aircraft.