UNDERDETERMINED

作品数：27被引量：55H指数：5
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Sparse Modal Decomposition Method Addressing Underdetermined Vortex-Induced Vibration Reconstruction Problem for Marine Risers被引量：1
《China Ocean Engineering》2024年第2期285-296,共12页DU Zun-feng ZHU Hai-ming YU Jian-xing 
financially supported by the National Natural Science Foundation of China(Grant Nos.51109158,U2106223);the Science and Technology Development Plan Program of Tianjin Municipal Transportation Commission(Grant No.2022-48)。
When investigating the vortex-induced vibration(VIV)of marine risers,extrapolating the dynamic response on the entire length based on limited sensor measurements is a crucial step in both laboratory experiments and fa...
关键词：motion reconstruction vortex-induced vibration(VIV) marine riser modal decomposition method compressed sensing 
Underdetermined direction of arrival estimation with nonuniform linear motion sampling based on a small unmanned aerial vehicle platform
《Defence Technology（防务技术）》2024年第3期352-363,共12页Xinwei Wang Xiaopeng Yan Tai An Qile Chen Dingkun Huang 
National Natural Science Foundation of China(61973037);National 173 Program Project(2019-JCJQ-ZD-324)。
Uniform linear array(ULA)radars are widely used in the collision-avoidance radar systems of small unmanned aerial vehicles(UAVs).In practice,a ULA's multi-target direction of arrival(DOA)estimation performance suffers...
关键词：Unmanned aerial vehicle(UAV) Uniform linear array(ULA) Direction of arrival(DOA) Difference co-array Nonuniform linear motion sampling method 
A dynamic stiffness-based framework for harmonic input estimation and response reconstruction considering damage
《Frontiers of Structural and Civil Engineering》2022年第4期448-460,共13页Yixian LI Limin SUN Wang ZHU Wei ZHANG 
support for the work reported in this paper from the National Natural Science Foundation of China(Grant No.51878482);the Hong Kong(China)Scholars Program(No.XJ2021036);and State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University(No.SLDRCE15-A-02).
In structural health monitoring(SHM),the measurement is point-wise but structures are continuous.Thus,input estimation has become a hot research subject with which the full-field structural response can be calculated ...
关键词：dynamic stiffness principal component analysis response reconstruction damage localization underdetermined equation 
Underdetermined DOA estimation via multiple time-delay covariance matrices and deep residual network被引量：4
《Journal of Systems Engineering and Electronics》2021年第6期1354-1363,共10页CHEN Ying WANG Xiang HUANG Zhitao 
supported by the Program for Innovative Research Groups of the Hunan Provincial Natural Science Foundation of China(2019JJ10004)。
Higher-order statistics based approaches and signal sparseness based approaches have emerged in recent decades to resolve the underdetermined direction-of-arrival(DOA)estimation problem.These model-based methods face ...
关键词：direction-of-arrival(DOA)estimation underdetermined condition deep residual network(DRN) time delay covariance matrix 
Iteratively weighted thresholding homotopy method for the sparse solution of underdetermined linear equations被引量：1
《Science China Mathematics》2021年第3期639-664,共26页Wenxing Zhu Zilin Huang Jianli Chen Zheng Peng 
supported by National Natural Science Foundation of China(Grant Nos.61672005 and 11571074)。
Recently, iteratively reweighted methods have attracted much interest in compressed sensing, outperforming their unweighted counterparts in most cases. In these methods, decision variables and weights are optimized al...
关键词：sparse optimization weighted thresholding method homotopy method 
Underdetermined mixing matrix estimation by comprehensive application of cluster validity indexes被引量：1
《The Journal of China Universities of Posts and Telecommunications》2020年第6期73-86,共14页Wang Chuanchuan Jiang Lin Zeng Yonghu Wang Liandong 
This work was supported by the National Natural Science Foundation of China(61801480).
To solve the problem of mixing matrix estimation for underdetermined blind source separation(UBSS)when the number of sources is unknown,this paper proposed a novel mixing matrix estimation method based on average info...
关键词：UBSS ESTIMATION of the number of radiation sources MIXING matrix FCM clustering CVI 
Improved statistical sparse decomposition principle method for underdetermined blind source signal recovery被引量：1
《The Journal of China Universities of Posts and Telecommunications》2019年第6期94-102,共9页Wang Chuanchuan Zeng Yonghu Wang Liandong Fu Weihong 
Aiming at the statistical sparse decomposition principle(SSDP) method for underdetermined blind source signal recovery with problem of requiring the number of active signals equal to that of the observed signals, whic...
关键词：UNDERDETERMINED BLIND source SEPARATION signal RECOVERY ISSDP 
Convergence analysis of ILC input sequence for underdetermined linear systems被引量：1
《Science China(Information Sciences)》2017年第9期282-284,共3页Dong SHEN Jian HAN Youqing WANG 
supported by National Natural Science Foundation of China(Grant Nos.61673045,61304085,61374099;Beijing Natural Science Foundation(Grant No.4152040)
Dear editor, Iterative learning control （ILC） is a kind of intelli- gent control strategy, applied to those systems that could complete a given task over a finite time inter- val and repeat it agMn and again. Since ...
关键词：In Convergence analysis of ILC input sequence for underdetermined linear systems ILC 
A two-stage frequency-domain blind source separation method for underdetermined instantaneous mixtures被引量：1
《Journal of Southeast University(English Edition)》2016年第2期135-140,共6页彭天亮 陈阳 
The National Natural Science Foundation of China(No.60872074)
In order to decrease the probability of missing some data points or noises being added in the inverse truncated mixing matrix （ITMM） algorithm, a two-stage frequency- domain method is proposed for blind source separ...
关键词：inverse truncated mixing matrix under-determined blind source separation （UBSS） frequencydomain matrix completion 
Outlier deletion based improvement on the StOMP algorithm for sparse solution of large-scale underdetermined problems被引量：2
《Science China(Information Sciences)》2014年第9期238-251,共14页ZHANG WanHong ZHOU Tong HUANG BoXue 
supported in part by National Basic Research Program of China (973)(Grant No. 2012CB316504);National Natural Science Foundation of China (Grant Nos. 61174122,61021063);Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20110002110045)
StOMP algorithm is well suited to large-scale underdetermined applications in sparse vector estimations. It can reduce computation complexity and has some attractive asymptotical statistical properties.However,the est...
关键词：stagewise orthogonal matching pursuit sparse solution linear underdetermined equations systems biology outlier deletion 
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