An increasing the accuracy of orientation determination of strapdown system based on the spatial rotation of gyroscopes relative to an object is considered. The subject of analysis is a mathematical model of the measurement errors of orientation angles, taking into account the constant biases of gyroscopes. The proposed error model makes it quite easy to evaluate the efficiency of auto-compensation. It is shown that the problem may be reduced to integrating the direction cosine matrix that determine the position of the sensitive elements in the reference coordinate system. The results of theoretical analysis and simulation confirm the high efficiency of this method for increasing the accuracy of measuring kinematic parameters.

At present, not enough attention is paid to the impact of uncertainty Earth's magnetic field, taking into account the errors of the sensor of the sun, setting errors inertia tensor microsatellite (MS) and noise measurements.This paper considers the problem of evaluating the accuracy of the angular orientation of the MS Kalman filter (FK) under uncertainty and measurement noise. Included instrumental errors and inaccurate meters mathematical model of MS.To solve this problem based simulation model of MS, where the mathematical tools used quaternion algebra. As of position sensors used magnetometer and sun sensor.The research of precision angular orientation of MS using positional sensors and FC in the presence of instrumental errors and uncertainties meters mathematical model of MS. A study evaluating the accuracy of the sensor orientation at the hit of the Sun in Earth's shadow.This study showed a significant effect of instrumental errors and uncertainties meters mathematical model of MS on the error estimation of the angular orientation of the metabolic syndrome, in particular, a significant impact inaccurate model of the geomagnetic field. FC is particularly sensitive to the absence of information from the sensor due to the sun getting MS in Earth's shadow.

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Доктор технічних наук, професор* *Кафедра приладів та систем керування літальними апаратами Національний технічний університет України «Київський політехнічний інститут» пр-т Перемоги,