Abstract
According to airborne early warning system's higher and higher requirement for precise attitude information and increasing demand for local attitude reference, a distributed inertial attitude measurement system scheme which is based on the information of airborne MINS (master inertial navigation system) and the information of several short precision SINS (slave inertial navigation system) was designed. The ground-demo of the distributed inertial attitude measurement system was set up to test the proposed method. Then to reduce the effect of the deflection to transfer alignment, the integral velocity and the integral angular rate are broadened to the state variables of Kalman filter. Besides, the state equation and the measurement equation are derived in detail. The simulation results show that the precisions of horizontal angle and azimuth angle are superior to 1.44' and 0.48' respectively. All these characteristics show that the scheme is feasible and can provide reference for the engineering application of the distributed inertial attitude measurement system.
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