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浏览/检索结果: 共4条，第1-4条 帮助 限定条件 发表日期：2012    内容类型：会议论文     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Improved TOPS about direction of arrival estimation for wideband signals (EI CONFERENCE) 会议论文 2011 International Conference on Vibration, Structural Engineering and Measurement, ICVSEM2011, October 21, 2011 - October 23, 2011, Shanghai, China He B. 收藏  |  浏览/下载：13/0  |  提交时间：2013/03/25 The study about the direction-of-arrival (DOA) estimation for wideband signals is a basic topic of Signal Processing. The method called test of orthogonality of projected subspaces (TOPS) does not require initial values to form focusing matrix compared with the coherent signal subspace method (CSSM)  but it has poor performance for coherent wideband signals at low signal-to-noise ratio (SNR). Based on the lack of the conventional TOPS  this paper reconstructs a set of new matrices with the narrowband correlated matrices coming from the DFT decomposition of the array output and modifies the method frame of the conventional TOPS. So we get a set of reconstructed matrices with full rank corresponding to each frequency bin  and which have no array aperture loss. The improved TOPS can estimate the DOA for coherent wideband sources at low SNR  and enhances the performance of the conventional TOPS. Simulation results show that the improved TOPS is effective  and the total performance of which is similar to the rotational signal-subspace (RSS) method. (2012) Trans Tech Publications.   Hyperspectral target detection based on improved automatic morphological endmember extraction method 会议论文 Proceedings of SPIE: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 2012 作者:  Sun, Xu-Guang;  Cai, Jing-Ju;  Xu, Zhi-Yong;  Zhang, Jian-Lin 收藏  |  浏览/下载：11/0  |  提交时间：2016/11/24 Closed-Loop Subspace Identification Algorithm of EIV Model Based on Orthogonal Decomposition and PCA 会议论文 ASIASIM 2012, PT I, 2012-10-27 作者:  Wang, Jianguo[1];  Guo, Yong[2];  Wang, Juanjuan[3] 收藏  |  浏览/下载：3/0  |  提交时间：2019/04/30 subspace identification methods (SIMs)  closed-loop identification  orthogonal decomposition  principal component analysis (PCA)  error in variable (EIV)   Face recognition via discriminative atom decomposition and linear subspace learning 会议论文 2012 3rd International Conference on Intelligent Control and Information Processing, ICICIP 2012, Dalian, 2012-07-15 作者:  Hu Y.;  Qi J. 收藏  |  浏览/下载：4/0  |  提交时间：2019/12/18