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The low-rank structure reverberation suppression algorithm is a better method to restrain the sea interface reverberation. But the data processing speed of the method is very slowly due to the complexity of singular value decomposition. It can not meet the real-time requirement in actual application. This article present a signal subspace fast approximation method based on unitary transformation which...
The inherent characteristic of ultrasonic and the application environment make ultrasonic image have some defects: image with speckle noise, edge blur and low contrast. In order to reduce the speckle noise and enhance the image characteristics, a speckle reduction and characteristic enhancement anisotropic diffusion algorithm is proposed based on the wavelet technology in this paper. The algorithm...
The sea interface reverberation model has been made based on the ray acoustic theory. A low-rank structure reverberation suppression algorithm has been presented based on the model. The detailed analysis and the final contrast simulation experiments show that the algorithm can be effectively suppress the shallow sea interface reverberation and solve the problem of weak target signal abstraction of...
The signal singularity of radio fuze reflects it be affected by surroundings. Since typical Fourier Transform Algorithm is difficult to detect the position of singularity and its distribution, a more accurate oriented method of signal singularity has been presented based on Wavelet Transform Algorithm. Simulation experiment for jamming identification of radio fuze has been conducted under this method...
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