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| 1 | 基于原子库结构特性的信号稀疏分解显示文摘在matchingpursuit(MP)方法的基础上,利用信号稀疏分解中使用的过完备原子库结构特性,提出了一种新的信号稀疏分解算法。新算法兼顾了稀疏分解过程中计算量和存储量,信号稀疏分解的速度是常规的MP方法的15. 9倍.实验结果证明了算法的有效性. | 尹忠科 王建英 邵君 | 2005 | 西南交通大学学报2005，40，2： | 35 |
| 2 | 利用FFT实现基于MP的信号稀疏分解显示文摘该文研究基于Matching Pursuit(MP)方法实现的信号稀疏分解算法,通过对信号稀疏分解中使用的过完备原子库结构特性的分析,提出了一种新的信号稀疏分解算法。该算法首先通过利用原子库的结构特性,很好地处理了稀疏分解过程中计算量和存储量之间的关系。在此基础上,把信号稀疏分解中计算量很大的内积运算转换成互相关运算,最后用FFT实现互相关运算,从而大大提高了信号稀疏分解的速度。算法的有效性为实验结果所证实。 | 尹忠科 邵君 Pierre Vandergheynst | 2006 | 电子与信息学报2006，28，4： | 25 |
| 3 | Inferring three-dimensional surface displacement field by combining SAR interferometric phase and amplitude information of ascending and descending orbits显示文摘Conventional Interferometric Synthetic Aperture Radar(InSAR) technology can only measure one-dimensional surface displacement(along the radar line-of-sight(LOS) direction).Here we presents a method to infer three-dimensional surface displacement field by combining SAR interferometric phase and amplitude information of ascending and descending orbits.The method is realized in three steps:(1) measuring surface displacements along the LOS directions of both ascending and descending orbits based on interferometric phases;(2) measuring surface displacements along the azimuth directions of both the ascending and descending orbits based on the SAR amplitude data;and(3) estimating the three-dimensional(3D) surface displacement field by combining the above four independent one-dimensional displacements using the method of least squares and Helmert variance component estimation.We apply the method to infer the 3D surface displacement field caused by the 2003 Bam,Iran,earthquake.The results reveal that in the northern part of Bam the ground surface experienced both subsidence and southwestward horizontal movement,while in the southern part uplift and southeastward horizontal movement occurred.The displacement field thus determined matches the location of the fault very well with the maximal displacements reaching 22,40,and 30 cm,respectively in the up,northing and easting directions.Finally,we compare the 3D displacement field with that simulated from the Okada model.The results demonstrate that the method presented here can be used to generate reliable and highly accurate 3D surface displacement fields. | HU Jun LI ZhiWei ZHU JianJun REN XiaoChong DING XiaoLi | 2010 | Science China Earth Sciences2010，53，4： | 21 |
| 4 | Photogrammetry and Deep Learning显示文摘Deep learning has become popular and the mainstream technology in many researches related to learning,and has shown its impact on photogrammetry.According to the definition of photogrammetry,that is,a subject that researches shapes,locations,sizes,characteristics and inter-relationships of real objects from optical images,photogrammetry considers two aspects,geometry and semantics.From the two aspects,we review the history of deep learning and discuss its current applications on photogrammetry,and forecast the future development of photogrammetry.In geometry,the deep convolutional neural network(CNN)has been widely applied in stereo matching,SLAM and 3D reconstruction,and has made some effects but needs more improvement.In semantics,conventional methods that have to design empirical and handcrafted features have failed to extract the semantic information accurately and failed to produce types of“semantic thematic map”as 4D productions(DEM,DOM,DLG,DRG)of photogrammetry.This causes the semantic part of photogrammetry be ignored for a long time.The powerful generalization capacity,ability to fit any functions and stability under types of situations of deep leaning is making the automatic production of thematic maps possible.We review the achievements that have been obtained in road network extraction,building detection and crop classification,etc.,and forecast that producing high-accuracy semantic thematic maps directly from optical images will become reality and these maps will become a type of standard products of photogrammetry.At last,we introduce our two current researches related to geometry and semantics respectively.One is stereo matching of aerial images based on deep learning and transfer learning;the other is precise crop classification from satellite spatio-temporal images based on 3D CNN. | Jianya GONG Shunping JI | 2018 | Journal of Geodesy and Geoinformation Science2018，1，1： | 19 |
| 5 | Satellite Image Matching Method Based on Deep Convolutional Neural Network显示文摘This article focuses on the first aspect of the album of deep learning: the deep convolutional method. The traditional matching point extraction algorithm typically uses manually designed feature descriptors and the shortest distance between them to match as the matching criterion. The matching result can easily fall into a local extreme value, which causes missing of the partial matching point. Targeting this problem, we introduce a two-channel deep convolutional neural network based on spatial scale convolution, which performs matching pattern learning between images to realize satellite image matching based on a deep convolutional neural network. The experimental results show that the method can extract the richer matching points in the case of heterogeneous, multi-temporal and multi-resolution satellite images, compared with the traditional matching method. In addition, the accuracy of the final matching results can be maintained at above 90%. | Dazhao FAN Yang DONG Yongsheng ZHANG | 2019 | Journal of Geodesy and Geoinformation Science2019，2，2： | 16 |
| 6 | Radiometric cross-calibration of the CBERS-02 CCD camera with the TERRA MODIS显示文摘For the application of the CCD camera, the most important payload on CBERS-02, the key is to provide long-term stable radiometric calibration coefficients. Although the vicarious calibration had been proved successful, it had its limitations such as test site requirement and unsuitable for historical data. Cross-calibration is one of the alternative methods, but it needs synchro surface spectrum to achieve spectral band matching factors. Our effort is to probe the influences on these factors. Simulations with a lot of surface spectrum showed that the factors changed with the viewing geometry, atmospheric condition and surface targets. However, simulating with the same viewing geometry and atmospheric condition, the spectral band matching factors of the same or similar surface targets’ spectrum acquired from different dates and different places would like to be consistent to each other within 1%―5%. Thus, the synchro measurement data can be substituted by the same or similar target from other source. Based on this method, using the MODIS as the reference, the cross-calibration was performed for CCD camera. The research demonstrated that the traditional method with single calibration site was inappropriate for CCD camera, since the offsets for its four spectral bands were not zeros. With four calibration sites, these offsets were obtained. And the camera was detected to degrade with dates based on four times of cross-calibrations. | LI Xiaoying1,2,3, GU Xingfa1,3,4, MIN Xiangjun5, YU Tao1,3, FU Qiaoyan5, ZHANG Yong1,2,3 & LI Xiaowen1,3 1. State Key Laboratory of Remote Sensing Science, Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University, Beijing 100101, China 2. Graduate University of Chinese Academy of Sciences, Beijing 100039, China 3. The Center for National Spaceborne Demonstration, Beijing 100101, China 4. Institut National de la Recherche Agronomique, Climat Sol Environnement, 84914 Avignon, France 5. China Center for Resource Satellite Data and Application, Beijing 100830, China | 2005 | Science China(Technological Sciences)2005，48，S2： | 15 |
| 7 | 一种新的图像稀疏分解快速算法显示文摘图像的稀疏表示特别适合于图像的处理,而求得图像稀疏表示的图像稀疏分解的计算量十分巨大。利用基于MatchingPursuit(MP)方法实现的图像稀疏分解算法,采用遗传算法快速寻找MP过程中每一步分解的最佳原子。根据寻找最佳原子的遗传算法的内在特点,提出了一种优化的快速算法。算法的有效性为实验结果所证实。 | 尹忠科 王建英 Pierre Vandergheynst | 2004 | 计算机应用2004，24，10： | 14 |
| 8 | 基于GA和原子特性的信号稀疏分解显示文摘信号稀疏表示在信号处理的许多方面有着重要的应用,但是求得信号稀疏表示的稀疏分解计算量十分巨大,是阻碍其实时应用的主要因素。本文研究基于MatchingPursuit(MP)方法实现的信号稀疏分解算法,采用遗传算法(GA)快速寻找MP过程中每一步分解的最佳原子。根据稀疏分解中使用原子的特性,提出了对基于GA和MP的信号稀疏分解的一种优化方法。算法的有效性为实验结果所证实。 | 尹忠科 王建英 Pierre Vandergheynst | 2005 | 铁道学报2005，27，3： | 14 |
| 9 | A New Ky Fan Matching Theorem in Noncompact L-Convex Spaces with the Application to Systems of General Quasiequilibrium Problems显示文摘In this paper, a new Ky Fan matching theorem is established in noncompact L-convex spaces. As applications, a fixed point theorem and equilibrium existence theorems for systems of general quasiequilibrium problems and systems of quasiequilibrium problems in noncompact L-convex spaces are obtained. | Kai Ting WEN | 2011 | Journal of Mathematical Research and Exposition2011，31，5： | 12 |
| 10 | 在低维空间实现的基于MP的图像稀疏分解显示文摘研究利用MatchingPursuit(MP)方法实现的图像稀疏分解算法,针对其中关键难题,提出利用在低维空间的搜索实现高维空间的搜索的快速方法。算法的有效性为实验结果所证实。 | 尹忠科 王建英 Pierre Vandergheynst | 2004 | 电讯技术2004，44，3： | 12 |
| 11 | Trust Access Authentication in Vehicular Network Based on Blockchain显示文摘Data sharing and privacy securing present extensive opportunities and challenges in vehicular network.This paper introducestrust access authentication scheme’as a mechanism to achieve real-time monitoring and promote collaborative sharing for vehicles.Blockchain,which can provide secure authentication and protected privacy,is a crucial technology.However,traditional cloud computing performs poorly in supplying low-latency and fast-response services for moving vehicles.In this situation,edge computing enabled Blockchain network appeals to be a promising method,where moving vehicles can access storage or computing resource and get authenticated from Blockchain edge nodes directly.In this paper,a hierarchical architecture is proposed consist of vehicular network layer,Blockchain edge layer and Blockchain network layer.Through a authentication mechanism adopting digital signature algorithm,it achieves trusted authentication and ensures valid verification.Moreover,a caching scheme based on many-to-many matching is proposed to minimize average delivery delay of vehicles.Simulation results prove that the proposed caching scheme has a better performance than existing schemes based on central-ized model or edge caching strategy in terms of hit ratio and average delay. | Shaoyong Guo Xing Hu Ziqiang Zhou Xinyan Wang Feng Qi Lifang Gao | 2019 | China Communications2019，16，6： | 10 |
| 12 | LAGFD-WAM numerical wave model- Ⅱ. Characteristics inlaid scheme and its application显示文摘In this paper the parameterizational approach of nonlinear source function and the implicit scheme of the model are discussed in detail. The matching problem is solved between time and space steps using the characteristics inlaid scheme with very strong physical meaning. The computational comparison in typical winds shows some improvements to the WAM model. That the hindcast results of the model for typhoon cases are in good agreement with real data illustrates its applicability to wave forecast and engineering study. | Yuan Yeli, Hua Feng, Pan Zengdi Sun Letao First Institute of Oceanography, State Oceanic Administration, Qingdao 266003, China | 1992 | Acta Oceanologica Sinica1992，11，1： | 10 |
| 13 | A Fast Aerial Image Matching Method Using Airborne LiDAR Point Cloud and POS Data显示文摘A novel tie point matching algorithm of aerial images with the assistance of airborne LiDAR point clouds and POS data is proposed Firstly,the conjugate point searching strategy used in traditional correlation coefficient matching is improved and a fast algorithm is presented.Secondly,an automatic camera boresight misalignment calibration method based on virtual ground control points is proposed,and then the searching range of image matching is adaptively determined and applied to the image matching of the entire surveying area.Test results verified that the fast correlation coefficient matching algorithm proposed in this paper can reduce approximately 25% of the matching time without the loss of matching accuracy.The camera boresight misalignment calibration method can effectively increase the accuracy of exterior orientation elements of images calculated from POS data,and thus can significantly improve the predicted position of conjugate point for tie point matching.Our proposed image matching algorithm can achieve superior matching accuracy with multi-scale,multi-view,and cross-flight aerial images. | Yongjun ZHANG Xiaodong XIONG Mengqiu WANG Yihui LU | 2019 | Journal of Geodesy and Geoinformation Science2019，2，1： | 10 |
| 14 | 基于稀疏分解的微弱信号检测方法显示文摘微弱信号的检测在通信、雷达、声纳等领域有着重要的意义,一直是信号处理的难点。本文将信号稀疏分解思想应用于信号检测,提出一种算法。算法中信号稀疏分解采用Matching Pursuit(MP)算法实现,原子采用正弦波模型,通过对正弦波模型伸缩和平移形成过完备原子库。由MP分解结果,可检测出淹没在强噪声环境中的微弱正弦信号的幅度、频率和初相位参数,从而恢复出待检测的微弱正弦信号。所提出方法在-40 dB极低信噪比环境下可以同时检测多个正弦信号。计算机仿真结果证实了算法的有效性。 | 王建英 尹忠科 | 2007 | 铁道学报2007，29，2： | 10 |
| 15 | 时频分析技术及研究现状显示文摘对不同的时频分析技术作了简要介绍,并对其优缺点、彼此间的相互关系进行了 较为详细的论述。同时,对时频分析技术所面临的问题及发展方向谈了一点个人看法。 | 刘庆云 李志舜 刘朝晖 | 2004 | 计算机工程2004，30，1： | 9 |
| 16 | Wheat straw-derived magnetic carbon foams: In-situ preparation and tunable high-performance microwave absorption显示文摘Recently,biomass-derived three-dimensional (3D) porous carbon materials have been gaining more interest as promising microwave absorbers due to their low cost,vast availability,and sustainability.Here,a novel 3D interconnected porous magnetic carbon foams are in-situ synthesized via a combination of sol-gel and carbonization process with wheat straw as the carbon source and FeCl3·6H2O as the magnetic regulating agent.During the process of foams formation,the lignocelluloses from the steam-exploded wheat straw are converted into interconnected carbon sheet networks with hierarchical porous structures,and the precursor FeCl3·6H2O is converted into magnetic nanoparticles uniformly embedded in the porous carbon foams.The generated magnetic nanoparticles are benefit to enhance the interface polarization and magnetic loss ability to improve the efficient complementarities between the dielectric and magnetic loss,thus increasing the impedance matching.The obtained sample treated at 600 ℃ displays the best microwave absorption (MA) performance.It presents a minimal reflection loss (RL) of-43.6 dB at 7.1 GHz and the effective bandwidth (RL <-10 dB) is 3.3 GHz with the thickness of 4.7 mm.The 3D porous structure,multi-interfaces and the synergy of dielectric loss and magnetic loss make great contribution to the outstanding MA performance. | Guangjun Gou Fanbin Meng Huagao Wang Man Jiang Wei Wei Zuowan Zhou | 2019 | Nano Research2019，12，6： | 9 |
| 17 | Engineered quasi-phase-matching for laser techniques[Invited]显示文摘The quasi-phase-matching(QPM)technique has drawn increasing attention due to its promising applications in areas such as nonlinear frequency conversion for generating new laser light sources.In this paper,we will briefly review the main achievements in this field.We give a brief introduction of the invention of QPM theory,followed by the QPM-material fabrication techniques.When combing QPM with the solid-state laser techniques,various laser light sources,such as single-wavelength visible lasers and ultraviolet lasers,red–green–blue three-fundamentalcolor lasers,optical parametric oscillators in different temporal scales,and passive mode-locking lasers based on cascaded second-order nonlinearity,have been presented.The QPM technique has been extended to quantum optics recently,and prospects for the studies are bright. | X.P.Hu P.Xu S.N.Zhu | 2013 | Photonics Research2013，1，4： | 8 |
| 18 | MmWave Beamforming for UAV Communications with Unstable Beam Pointing显示文摘Millimeter wave(mmWave) communications of unmanned aerial vehicles(UAVs) have drawn dramatic attentions for its flexibility on a variety of applications.Recently,channel tracking base on the spatial features has been proposed to solve the problem of beam misalignments due to the UAV navigation.However,unstable beam pointing caused by the non-ideal beam tracking environment may impact the performance of mmWave systems significantly.In this paper,an improved beamforming method is presented to overcome this shortcoming.Firstly,the effect of the beam deviation is analyzed through the establishment of the equivalent data rate.Then,combining the quantification of spatial angle and the improved orthogonal matching pursuit(OMP) algorithm,an optimized beam corresponding to the beam deviation is obtained.Simulation results show that the optimized beam of the proposed approach can effectively improve the spectral efficiency without improving the complexity when the beam pointing is unstable. | Weizhi Zhong Lei Xu Qiuming Zhu Xiaomin Chen Jianjiang Zhou | 2019 | China Communications2019，16，1： | 7 |
| 19 | Short-term therapeutic outcomes of robotic-assisted laparoscopic radical prostatectomy for oligometastatic prostate cancer:a propensity score matching study显示文摘Background:The role of local treatment in oligometastatic prostate cancer(PCa)is gaining interest with the oligometastases hypothesis proposed and the improvement of various surgical methods and techniques.This study aimed to compare the short-term therapeutic outcomes of robotic-assisted laparoscopic radical prostatectomy(RALP)for oligometastatic prostate cancer(OPC)vs.localized PCa using propensity score matching.Methods:Totally 508 consecutive patients underwent RALP as a first-line treatment.The patients were divided into two groups according to oligometastatic state:the OPC group(n=41)or the localized PCa group(n=467).Oligometastatic disease was defined as the presence of two or fewer suspicious lesions.The association between the oligometastatic state and therapeutic outcomes of RALP was evaluated,including biochemical recurrence(BCR)and overall survival(OS).A Cox proportional hazards model was used to assess the possible risk factors for BCR.Results:Totally 41 pairs of patients were matched.The median operative time,the median blood loss,the overall positive surgical margin rate,the median post-operative hospital stays,and the post-operative urinary continence recovery rate between the two groups showed no statistical significance.The 4-year BCR survival rates of the OPC group and localized PCa group were 56.7%and 60.8%,respectively,without a significant difference(P=0.804).The 5-year OS rates were 96.3%and 100%,respectively(P=0.326).Additionally,the results of Cox regression showed that oligometastatic state was not an independent risk factor for BCR(P=0.682).Conclusions:Our findings supported the safety and effectiveness of RALP in OPC.Additionally,oligometastatic state and sites did not have an adverse effect on BCR independently. | Huan Chen Min Qu Bi-Jun Lian Hai-Feng Wang Yan Wang Zhen-Yang Dong Feng Zhu Zhen-Kai Shi Ze-Peng Jia Ying-Hao Sun Xu Gao | 2020 | Chinese Medical Journal2020，，2： | 7 |
| 20 | Transarterial chemoembolization with PD-(L)1 inhibitors plus molecular targeted therapies for hepatocellular carcinoma(CHANCE001)显示文摘There is considerable potential for integrating transarterial chemoembolization(TACE),programmed death-(ligand)1(PD-[L]1)inhibitors,and molecular targeted treatments(MTT)in hepatocellular carcinoma(HCC).It is necessary to investigate the therapeutic efficacy and safety of TACE combined with PD-(L)1 inhibitors and MTT in real-world situations.In this nationwide,retrospective,cohort study,826 HCC patients receiving either TACE plus PD-(L)1 blockades and MTT(combination group,n=376)or TACE monotherapy(monotherapy group,n=450)were included from January 2018 to May 2021.The primary endpoint was progression-free survival(PFS)according to modified RECIST.The secondary outcomes included overall survival(OS),objective response rate(ORR),and safety.We performed propensity score matching approaches to reduce bias between two groups.After matching,228 pairs were included with a predominantly advanced disease population.Median PFS in combination group was 9.5 months(95%confidence interval[CI],8.4-11.0)versus 8.0 months(95%CI,6.6-9.5)(adjusted hazard ratio[HR],0.70,P=0.002).OS and ORR were also significantly higher in combination group(median OS,19.2[16.1-27.3]vs.15.7 months[13.0-20.2];adjusted HR,0.63,P=0.001;ORR,60.1%vs.32.0%;P<0.001).Grade 3/4 adverse events were observed at a rate of 15.8%and 7.5%in combination and monotherapy groups,respectively.Our results suggest that TACE plus PD-(L)1 blockades and MTT could significantly improve PFS,OS,and ORR versus TACE monotherapy for Chinese patients with predominantly advanced HCC in real-world practice,with an acceptable safety profile. | Hai-Dong Zhu Hai-Liang Li Ming-Sheng Huang Wei-Zhu Yang Guo-Wen Yin Bin-Yan Zhong Jun-Hui Sun Zhi-Cheng Jin Jian-Jian Chen Nai-Jian Ge Wen-Bin Ding Wen-Hui Li Jin-Hua Huang Wei Mu Shan-Zhi Gu Jia-Ping Li Hui Zhao Shu-Wei Wen Yan-Ming Lei Yu-Sheng Song Chun-Wang Yuan Wei-Dong Wang Ming Huang Wei Zhao Jian-Bing Wu Song Wang Xu Zhu Jian-Jun Han Wei-Xin Ren Zai-Ming Lu Wen-Ge Xing Yong Fan Hai-Lan Lin Zi-Shu Zhang Guo-Hui Xu Wen-Hao Hu Qiang Tu Hong-Ying Su Chuan-Sheng Zheng Yong Chen Xu-Ya Zhao Zhu-Ting Fang Qi Wang Jin-Wei Zhao Ai-Bing Xu Jian Xu Qing-Hua Wu Huan-Zhang Niu Jian Wang Feng Dai Dui-Ping Feng Qing-Dong Li Rong-Shu Shi Jia-Rui Li Guang Yang Hai-Bin Shi Jian-Song Ji Yu-E Liu Zheng Cai Po Yang Yang Zhao Xiao-Li Zhu Li-Gong Lu Gao-Jun Teng | 2023 | Signal Transduction and Targeted Therapy2023，8，3： | 7 |
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