Search

Your search keyword '"Zhang, Yongshun"' showing total 33 results
Start Over Author "Zhang, Yongshun" Publication Type Conference Materials
33 results on '"Zhang, Yongshun"'

19. A novel heterogeneous training sample selection method on space-time adaptive processing.

Author

Wang, Qiang, Zhang, Yongshun, Guo, Yiduo, Liu, Lin, Yang, Can, and Ke, Jianfeng

Subjects
SPACE-time adaptive signal processing, ADAPTIVE signal processing, MATHEMATICAL optimization, SIGNAL processing, ADAPTIVE signal detection
Abstract

The performance of ground target detection about space-time adaptive processing (STAP) decreases when non-homogeneity of clutter power is caused because of training samples contaminated by target-like signals. In order to solve this problem, a novel nonhomogeneous training sample selection method based on sample similarity is proposed, which converts the training sample selection into a convex optimization problem. Firstly, the existing deficiencies on the sample selection using generalized inner product (GIP) are analyzed. Secondly, the similarities of different training samples are obtained by calculating mean-hausdorff distance so as to reject the contaminated training samples. Thirdly, cell under test (CUT) and the residual training samples are projected into the orthogonal subspace of the target in the CUT, and mean-hausdorff distances between the projected CUT and training samples are calculated. Fourthly, the distances are sorted in order of value and the training samples which have the bigger value are selective preference to realize the reduced-dimension. Finally, simulation results with Mountain-Top data verify the effectiveness of the proposed method. [ABSTRACT FROM AUTHOR]

Published
2018
Full Text
View/download PDF

27. Research on Time Domain Radiation Waveform Characteristic of UWB Array.

Author

Lu Weihong, Feng Cunqian, Zhang Yongshun, and Tian Bo

Subjects
RADIATION, GAUSSIAN distribution, COMPUTER simulation, COMPUTER architecture, COMPUTER security
Abstract

The time domain radiation waveform characteristic of UWB array is introduced based on the Gaussian Monocycle pulse. The mathematical relation between the maximum radiation direction and the network delay, separation distance between adjacent array elements has been discussed, and the formula of calculating the compositive waveform effective duration has been put forward first time. Some available results has been got through simulation and calculation. [ABSTRACT FROM AUTHOR]

Published
2009

Catalog

Books, media, physical & digital resources
See catalog results