Navigation System With Pivoting Inertial Measurement Units

Abstract: The invention relates to an inertial navigation system (D) intended to be carried on board a vehicle (S), comprising at least two first inertial measurement units (10.1, 10.2, 10.3) of the type connected to the vehicle, and at least two second inertial measurement units (20.1, 20.2, 20.3) each secured to a turntable (30.1, 30.2, 30.3) mounted with the ability to pivot about an axis of rotation (R1, R2, R3), the axes of rotation of the second inertial measurement units being angularly offset from one another, the system comprising an electronic location calculation unit (50) which is connected to the inertial measurement units and to a motor that drives the rotation of the turntables in order to control them and which employs at least a filtering algorithm in order to observe and correct a discrepancy between the positions provided by the measurement units, the electronic unit being programmed to control the motor in such a way as to cause the turntables to pivot and process the measurements simultaneously coming from the second inertial measurement units in at least two distinct angular positions of each turntable and of the first measurement units.

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