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In order to decrease two-dimensional DOA computational complexity, a 2-D direction finding method is proposed with L-shape uniform linear arrays when the additive white Gaussian noises exist. A cross-correlation matrix of received signals is first constructed. Afterwards, signal subspace can be acquired by performing eigen-value decomposition of the matrix. The signal subspace is divided into two...
With the technological advancements, the development of remote sensing is rapid, and the resolving capability of sensors has improved greatly, which makes that the further requirements have been raised for processing efficiency of mass-data image. Aim at the problem of the slow-footed processing of mass-data image, this paper modifies the method of third-order Lagrange interpolation, and GPU multi-thread...
The ESPRIT (Estimation of Signal Parameters via Rotational Invariance Techniques) is proposed for estimating the DOA (Direction-Of-Arrival) of narrowband signal, which uses the rotation invariance of the received data's signal subspace to estimate the DOA. But the ESPRIT algorithm can't be directly used for the wideband signal. The ESPRIT algorithm based on K-means introduces K-means algorithm to...
Digital predistortion is an effective method to compensate for nonlinear distortion of power amplifier. In order to improve the linearization performance of digital predistortion, an accurate loop-delay estimation method is proposed. This method can overcome the impairment caused by the nonlinear distortion of power amplifier, and it has higher accuracy and lower computation complexity than the previous...
LS estimator is the classical diffusion tensor estimate method. It could get optimal result with highest estimate efficiency on the condition that the noise distribution is Gaussian strictly. But it is quite not robust, for even one outlier could make the error result. M estimator is more robust than LS estimator, but its breakdown point is very low, thus it could not resist the outliers effetely...
This paper presents a novel intelligent data mining technique to estimate the optical properties of touch panel (TP) with different layers coating. The neural network (NN) model is developed to be the intelligent tool for the data analyzer. The new computational method based on well-trained NN's weights is used to analyze the influencing factors of TP film's chromatic aberration, i.e. L.a.b. values...
Many kinds of methods are used to denoising every type of noising. However in this paper we find that even the same kind of noising has different perception of image quality distortion in each color component. In order to know the perception distortion of noising in color components, several simple discrepancy measurements are calculated for each channel of different color space, such as Euclidean...
Electric vehicle battery management system works in the poor working environment, so that using conventional Kalman filtering algorithm to estimate the state of charge of electric vehicle battery will lead to inaccurate estimation, even divergent filtering. Aiming at the poor adaptive ability, defects of traditional filtering algorithm, the paper designs an improved fuzzy adaptive Kalman filter method,...
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