METHOD FOR DETERMINING THE ORIENTATION OF AN OBJECT IN A STRAPDOWN INERTIAL NAVIGATION SYSTEM Russian patent published in 2023 - IPC G01C23/00 G01C21/20 

FIELD: instrumentation.

SUBSTANCE: invention can be used to create strapdown inertial navigation systems. The essence of the proposed method lies in projection of data acceleration of the object on the axis of the accompanying trihedron, which is sequentially carried out in two stages. At the first stage, n projections of the object acceleration data received from the accelerometers are formed onto the spatial axes of the auxiliary coordinate system, which coincides at the initial moment with the instrumental coordinate system and then remains motionless in the inertial space. At the second stage, after formation of n projections of the object acceleration data received from the accelerometers onto the coordinate axes of the auxiliary system, the average value is determined from n data projections onto the coordinate axes of the auxiliary system. Then the obtained data is transferred to the navigation calculator for designing the accompanying trihedron on the axis and using it to calculate navigation parameters, characterizing the orientation of the object in the strapdown inertial navigation system.

EFFECT: increase of accuracy and reliability of determining orientation of an object while expanding the arsenal of technical means.

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