Ballistic Roll Estimation using EKF Frequency Tracking and Adaptive Noise Cancellation

We present an attitude estimation method for self-guided ballistic munitions from onboard magnetometers. An adaptive feedback filter is used to remove actuator-induced magnetic disturbances whose spectrum overlaps the signal of interest. A state-augmented extended Kalman filter (EKF) is used to estimate roll rate and sensor bias from the filtered data. Experimental results demonstrate that this method is able to accurately estimate the roll without phase delay inherent in other methods.

[1]  B. Widrow,et al.  Adaptive noise cancelling: Principles and applications , 1975 .

[2]  Gang Li,et al.  A stable and efficient adaptive notch filter for direct frequency estimation , 1997, IEEE Trans. Signal Process..

[3]  Barbara F. La Scala,et al.  Design of an extended Kalman filter frequency tracker , 1996, IEEE Trans. Signal Process..

[4]  Sergio M. Savaresi,et al.  On the parametrization and design of an extended Kalman filter frequency tracker , 2000, IEEE Trans. Autom. Control..

[5]  Kiyoshi Nishiyama,et al.  A nonlinear filter for estimating a sinusoidal signal and its parameters in white noise: on the case of a single sinusoid , 1997, IEEE Trans. Signal Process..

[6]  S. Bittanti,et al.  Frequency tracking via extended Kalman filter: parameter design , 2000, Proceedings of the 2000 American Control Conference. ACC (IEEE Cat. No.00CH36334).

[7]  Barbara F. La Scala,et al.  An extended Kalman filter frequency tracker for high-noise environments , 1996, IEEE Trans. Signal Process..

[8]  S. Ding,et al.  Sensor fault reconstruction and sensor compensation for a class of nonlinear state-space systems via a descriptor system approach , 2007 .

[9]  P. Djurić,et al.  Frequency tracking in power networks in the presence of harmonics , 1993 .

[10]  Ganapati Panda,et al.  An extended complex Kalman filter for frequency measurement of distorted signals , 2000, 2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077).

[11]  Michael J. Wilson,et al.  Measuring In-Flight Angular Motion With a Low-Cost Magnetometer , 2007 .

[12]  Ole A Knudson,et al.  The Future of Gun-Fired Precision Munitions (GFPM) , 2008 .

[13]  W. Ng,et al.  A Study on Particle Filters for Single-Tone Frequency Tracking , 2009, IEEE Transactions on Aerospace and Electronic Systems.