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浏览/检索结果: 共22条,第1-10条 帮助

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Phylogenomics and the flowering plant tree of life 期刊论文  OAI收割
JOURNAL OF INTEGRATIVE PLANT BIOLOGY, 2022
作者:  
Guo, Cen;  Luo, Yang;  Gao, Lian-Ming;  Yi, Ting-Shuang;  Li, Hong-Tao
  |  收藏  |  浏览/下载:12/0  |  提交时间:2024/08/21
Quantifying the Land Use and Land Cover Changes in the Yellow River Basin while Accounting for Data Errors Based on GlobeLand30 Maps 期刊论文  OAI收割
LAND, 2021, 卷号: 10, 期号: 1, 页码: 18
作者:  
Sun, Xiaofang;  Li, Guicai;  Wang, Junbang;  Wang, Meng
  |  收藏  |  浏览/下载:32/0  |  提交时间:2021/04/25
Normal Physics Model of Aerial Remote Sensing Platform and Systemic Accuracy Assessment Variable Baseline-height Ratio 期刊论文  OAI收割
Cehui Xuebao/Acta Geodaetica et Cartographica Sinica, 2018, 卷号: 47, 期号: 6, 页码: 748-759
作者:  
Yan, Lei;  Li, Yingcheng;  Zhao, Shihu;  Yuan, Xiuxiao;  Song, Yan
  |  收藏  |  浏览/下载:18/0  |  提交时间:2019/09/17
The architecture of blind equalizer for MIMO free space optical communication system 期刊论文  OAI收割
Proceedings of SPIE: Optical Communication and Optical Fiber Sensors and Optical Memories for Big Data Storage, 2016, 卷号: 10158, 页码: 101581H
作者:  
Li, Hongwei;  Huang, Yongmei
  |  收藏  |  浏览/下载:32/0  |  提交时间:2018/06/14
Towards convolutional neural networks compression via global error reconstruction 会议论文  OAI收割
25th international joint conference on artificial intelligence, ijcai 2016, new york, ny, united states, 2016-07-09
作者:  
Lin, Shaohui;  Ji, Rongrong;  Guo, Xiaowei;  Li, Xuelong
收藏  |  浏览/下载:30/0  |  提交时间:2017/01/04
Data-Driven Neuro-Optimal Temperature Control of Water-Gas Shift Reaction Using Stable Iterative Adaptive Dynamic Programming 期刊论文  OAI收割
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 2014, 卷号: 61, 期号: 11, 页码: 6399-6408
作者:  
Wei, Qinglai;  Liu, Derong
收藏  |  浏览/下载:38/0  |  提交时间:2015/08/12
Adaptive Dynamic Programming for Optimal Tracking Control of Unknown Nonlinear Systems With Application to Coal Gasification 期刊论文  OAI收割
IEEE TRANSACTIONS ON AUTOMATION SCIENCE AND ENGINEERING, 2014, 卷号: 11, 期号: 4, 页码: 1020-1036
作者:  
Wei, Qinglai;  Liu, Derong
收藏  |  浏览/下载:29/0  |  提交时间:2015/08/12
Physical layer design for free space optical communication (EI CONFERENCE) 会议论文  OAI收割
2012 International Conference on Control Engineering and Communication Technology, ICCECT 2012, December 7, 2012 - December 9, 2012, Shenyang, Liaoning, China
作者:  
Wang H.;  Zhang Q.;  Guo J.;  Guo J.;  Wang H.
收藏  |  浏览/下载:31/0  |  提交时间:2013/03/25
A small size Free Space Optical Communication System is introduced  including the hardware and the hardware specified physical layer protocol. In detail  the rapid synchronization method to reduce the handshake bandwidth requirement is demonstrated. The hardware of the system includes the laser driver system  the signal amplifying and shaping system  the data interface system. The hardware specified physical layer protocol is used to interface the outer data  serialize and deserialize the data stream  check transmission errors and schedule the data transmission. The overall system is a FIFO-like system and the user can use it as if he's operating a FIFO. The system is designed mainly for terrestrial FSO link whose signal channel is the atmosphere. Due to the complex composition and activity of the atmosphere  this signal channel brings in great influence on the transmitting laser in it  for example  the absorption and scattering of the atmosphere molecules and aerosols  the scintillation of received laser power caused by the turbulence of the atmosphere  all of which results in a much higher Bit Error Rate (BER) of the communication system than wired communication systems leading to frequent resynchronization. In our system  the sampling clock is generated locally using multi-phase sampling technique rather than PLLbased clock recovery  which helps to rapid synchronization. 2012 IEEE.  
Human age estimation with surface-based features from MRI images 会议论文  OAI收割
美国, 2012/10/1
作者:  
Wang, Jieqiong;  Dai, Dai;  Li, Meng;  Hua, Jing;  *He, Huiguang
  |  收藏  |  浏览/下载:25/0  |  提交时间:2018/02/14
Gimbal displacement error analysis on an electro-optical seeker (EI CONFERENCE) 会议论文  OAI收割
Optical Design and Testing IV, October 18, 2010 - October 20, 2010, Beijing, China
作者:  
Zhang X.;  Zhang X.;  Zhang X.
收藏  |  浏览/下载:35/0  |  提交时间:2013/03/25
It is essential to analyze the gimbal displacement errors for a seeker due to the importance for cueing of targets and tracking for the final approach. Otherwise  for a seeker electro-driven with a concentric glass dome  the large errors will decrease the picking  pointing  and tracking precision rooted from the displacement errors existing between the rotation center of the optical system and the gimbal. And the gimbaled camera system displacement errors are never eliminated but reduced due to the geometric errors consists of geometric tolerances of gimbal structure  manufacture  installation and vibration coming from working environment. In this paper  the gimbal displacement errors in an electro-optically stabilized platform resulting from geometric errors and environment errors were analyzed and shown in detail. The mathematical modal of the gimbal displacement errors created based on multi-body dynamics demonstrated the connection between the gimbal displacement errors and the stabilized platform. Taking a visible light image seeker as a case  the diameter is 120mm  and the geometric tolerances came from the values of primary design and the vibration data came from the environmental vibration test on the pitch-yaw seeker  and at the same time  the errors resulting from installation were considered too. Based on calculating  the maximum gimbal displacement error will reach to 0.2mm for pitching angle smaller than 40 and yawing angle smaller than 60. However  the critical parts have been found out according to the probability theory and the reliability analysis successfully used in the paper  and finally  the maximum gimbal displacement error reduced to 0.1mm  which is acceptable corresponding to the picking  pointing and tracking precision for an optical imaging seeker. 2010 Copyright SPIE - The International Society for Optical Engineering.