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Modified coning algorithm based on filtered gyro data


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Modified coning algorithm based on filtered gyro data
Li Qian1Ben Yueyang1Yu Fei2Lu Baofeng1
1.Automation College; 2.Science College,Harbin Engineering University,Harbin 150001,China
strapdown inertial navigation system coning algorithm pseudo coning digital filters
In view of that the low pass filter violates the response of the gyro frequency in the strapdown inertial navigation system(SINS)with dithered ring laser gyros,the coning error compensation terms and expressions of cross products of incremental angles are deduced using the gyro filtered data as the algorithm input.The modified multi-sample algorithms are designed and caculation method of error drifts are given.The simulation and test results show that the modified coning compensation algorithm performs better than conventional ones while considering effects of the low-pass digital filter on gyros.


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Last Update: 2013-04-30