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In this paper, the transonic measurement of air velocity is addressed based on an acoustic vector sensor. According to the measurement model of acoustic particle-velocity vector field developed by the analytical method of the equivalent acoustic source, we establish the relationship between the observation data of the acoustic vector sensor and the transonic air velocity to be estimated. A two-dimensional...
In this paper, a new Krein space approach to robust filtering for linear systems with multiple uncertainties is developed. The multiple uncertainties satisfy the energy-type constraints, entering into both state and measurement equations. The proposed approach is used to tackle the sub-optimization problem arising from a sum quadratic constraint (SQC) of system uncertainties. To this end, a novel...
Adaptive wavelet threshold for Bayes shrink (Bayes threshold) is a simple and effective method for image denoising. Multiple wavelet representations have excellent performance in image denoising. In this paper, combining the multiple wavelet representations with the Bayes threshold and using their advantages in image denoising, proposes a new image denoising algorithm which called M-Bayes threshold...
The optimal two-position alignment using Kalman filter is newly derived for strapdown inertial navigation system (SINS). During the alignment process, SINS is rotated with respect to the heading axis. The Kalman filter estimates the misalignments and gyro drifts at these two positions. In terms of the relationship between yaw misalignments and gyro drifts, the horizontal gyro drifts can be computed...
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