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This paper researches digital filter, uses IIR digital low pass filter to process the raw output of fiber optic gyroscope. In order to eliminate the noise of high frequency, uses the smoothing filter algorithm process the FOG output after digital low pass filter. Using Matlab tools design the filter parameters, uses fiber optic gyroscope without the filter data for online simulation test, adjustes...
The azimuth was often a large angle because navigation accuracy of fiber-optic inertial navigation system is not high, and the filtering equations of initial alignment are non-linear. In order to improve the initial alignment accuracy of nonlinear models, a improved Sage_Husa adaptive Kalman filtering method is put forward, and applied to initial alignment of fiber-optic inertial navigation system...
Based on a nine-accelerometer configuration, application integral algorithm and logarithmic algorithm to solve angular velocity of gyroscope-free strap down inertial navigation system (GFSINS). Process was derived for solving angular velocity using two kinds of algorithms, and found in experiments the signal of solving angular velocity using logarithmic algorithm can't judge in some cases, then detailed...
Based on a nine-accelerometer configuration, detailed analyzes the principle of gyroscope free strapdown inertial navigation system (GFSINS), and gives the process for solving angular velocity using a nine-accelerometer configuration. Adaptive kalman filter is constructed equation of state and filtering equations, and using a ballistic data, in the external noise is white noise conditions, and the...
Based on the measurement of azimuth and its variation velocity, the UKF (Unscented Kalman filter) is used to estimate the target position in the passive locating problem. Algorithm model is proposed and simulation calculation is carried out. Simulation results show that the proposed algorithm is feasible to solve the passive locating problem.
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