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Configuration-Independent Kinematics for Modular Mobile Manipulators 会议论文  OAI收割
AUG 01-03, 2016
作者:  
Liu, Liang
  |  收藏  |  浏览/下载:17/0  |  提交时间:2018/01/12
A new assessment model for evacuation vulnerability in urban areas SCI/SSCI论文  OAI收割
2016
作者:  
Ma X. Y.;  Pei, T.;  Song, C.;  Zhou, C. H.
收藏  |  浏览/下载:31/0  |  提交时间:2016/12/16
A new assessment model for evacuation vulnerability in urban areas SCI/SSCI论文  OAI收割
2016
作者:  
Ma X. Y.;  Pei, T.;  Song, C.;  Zhou, C. H.
  |  收藏  |  浏览/下载:30/0  |  提交时间:2017/11/09
PET image reconstruction with a system matrix containing point spread function derived from single photon incidence response 期刊论文  OAI收割
CHINESE PHYSICS B, 2015, 卷号: 24, 期号: 1, 页码: 18702
作者:  
Fan X(樊馨);  Wang HP(王海鹏);  Yuan MK(贠明凯);  Sun XL(孙校丽);  Cao XX(曹学香)
收藏  |  浏览/下载:41/0  |  提交时间:2016/04/18
Design and calibration of the solar irradiance monitor (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China
作者:  
Yang D.-J.;  Gong C.-H.;  Wang Y.-P.;  Ye X.;  Fang W.
收藏  |  浏览/下载:27/0  |  提交时间:2013/03/25
The solar irradiance monitor (SIM)  with the design accuracy of 5  used to monitor the secular changes of the total solar irradiance on FY-3 satellite  takes the sun-scanning measurement method on-orbit. Compared to the sun-tracking measurement method  this method simplifies the structure and cuts the cost  but the measuring accuracy is affected by the sun-synchronous orbit  sunlight incidence angle and the installing angle of the SIM in the satellite. Through the ground calibration experiment  studies on the affection of different sunlight incidence angles to the measurement accuracy. First  by the satellite tool kit (STK) simulation software  simulates the orbital parameters of the sun-synchronous satellite  and calculates the Sun ascension and declination at any time. By the orbit coordinate transformation matrix gets the components of the Sun vectors to the axes of the satellite  and base on the components designs the field of view and the installing angles of the SIM. Then  designs and completes the calibration experiment to calibrate the affection of the incidence angles. Selecting 11 different angles between the sunlight and the satellite X-axis  measures the total solar irradiance by the SIM at each angle  and compares to the irradiances of the SIAR reference radiometers  and gets the coefficient curves of the three channels of the SIM. Finally  by the quadratic fitting  gets the correction equations on the incidence angles: R 1=5.7110-52 -2.45310 -3+1.0302  R2=2.8410-5-1. 96510-3+1.0314 and R3 =1.7210 -52-4.18410-4+0.9946. The equations will aimprove the on-orbit measurement accuracy of the solar irradiance  and are very important to the on-orbit data processing after the satellite launched. 2011 SPIE.  
The imaging system design of three-line LMCCD mapping camera (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications, May 24, 2011 - May 26, 2011, Beijing, China
作者:  
Zhao Y.;  Yu D.;  Yu D.;  Zhao Y.;  Zhao Y.
收藏  |  浏览/下载:17/0  |  提交时间:2013/03/25
In this paper  the SNR tested in laboratory is better than 95 under typical working condition(the solar incidence degree is 30  the temperature of the focal plane module is controlled under 30 in a working period of 15 minutes. All of these results can satisfy the requirements about the synchronous photography  the authors introduced the theory about LMCCD (line-matrix CCD) mapping camera firstly. On top of the introduction were consists of the imaging system of LMCCD mapping camera. Secondly  the photography interval of line-matrix CCD of the nadir camera can satisfy the butter requirements of LMCCD focal plane module  the reflectivity of the earth's surface is 0.3) of each CCD image  the temperature control of focal plane module and SNR  some pivotal designs which were Introduced about the imaging system  Which give the guarantee of precision for satellite photogrammetry. 2011 SPIE.  such as the design of focal plane module  the video signal's procession  the controller's design of the imaging system  synchronous photography about forward and nadir and backward camera and the nadir camera of line-matrix CCD. At last  the test results of LMCCD mapping camera imaging system were introduced. The results as following: the precision of synchronous photography about forward and nadir and backward camera is better than 4 ns and the nadir camera of line-matrix CCD is better than 4 ns too  
Input-state incidence matrix of Boolean control networks and its applications 期刊论文  OAI收割
SYSTEMS & CONTROL LETTERS, 2010, 卷号: 59, 期号: 12, 页码: 767-774
作者:  
Zhao, Yin;  Qi, Hongsheng;  Cheng, Daizhan
  |  收藏  |  浏览/下载:30/0  |  提交时间:2018/07/30