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- W2168627656 abstract "Kalman filter (KF) uses measurement updates to correct system states error and to limit the errors in navigation solutions. However, only when the system dynamic and measurement models are correctly defined, and the noise statistics for the process are completely known, KF can optimally estimate a system’s states. Without measurement updates, Kalman filter’s prediction diverges; therefore the performance of an integrated GPS/INS navigation system may degrade rapidly when GPS signals are unavailable. This paper presents a neural network (NN) aided Kalman filtering method to improve navigation solutions of integrated GPS/INS navigation system. In the proposed loosely coupled GPS/INS navigation system, extended KF (EKF) estimates the INS measurement errors, plus position, velocity and attitude errors, and provides precise navigation solutions while GPS signals are available. At the same time, multi-layer NN is trained to map the vehicle manoeuvre with INS prediction errors during each GPS epoch, which is the input of the EKF. During GPS signal blockages, the NN can be used to predict the INS errors for EKF measurement updates, and in this way to improve navigation solutions. The principle of this hybrid method and the NN design are presented. Land vehicle based field test data are processed to evaluate the performance of the proposed method. DOI: http://dx.doi.org/10.11591/telkomnika.v11i3.2189" @default.
- W2168627656 created "2016-06-24" @default.
- W2168627656 creator A5011577789 @default.
- W2168627656 date "2013-03-01" @default.
- W2168627656 modified "2023-09-24" @default.
- W2168627656 title "Neural Network Aided Kalman Filtering For Integrated GPS/INS Navigation System" @default.
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- W2168627656 doi "https://doi.org/10.11591/telkomnika.v11i3.2189" @default.
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