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Ring-restricted N-nitrosated rhodamine as a green-light triggered, orange-emission calibrated and fast-releasing nitric oxide donor 期刊论文  OAI收割
CHINESE CHEMICAL LETTERS, 2018, 卷号: 29, 期号: 10, 页码: 1497-1499
作者:  
He Haihong;  He Tingting;  Zhang Ziqian;  Xu Xiu;  Yang Huibin
  |  收藏  |  浏览/下载:17/0  |  提交时间:2021/02/02
Ring-restricted N-nitrosated rhodamine as a green-light triggered, orange-emission calibrated and fast-releasing nitric oxide donor 期刊论文  OAI收割
CHINESE CHEMICAL LETTERS, 2018, 卷号: 29, 期号: 10, 页码: 1497-1499
作者:  
He Haihong;  He Tingting;  Zhang Ziqian;  Xu Xiu;  Yang Huibin
  |  收藏  |  浏览/下载:20/0  |  提交时间:2021/02/02
A method to estimate the neutral atmospheric density near the ionospheric main peak of Mars 期刊论文  OAI收割
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2016, 卷号: 121, 期号: 4, 页码: 3464-3475
作者:  
Zou, Hong;  Ye, Yu Guang;  Wang, Jin Song;  Nielsen, Erling;  Cui, Jun
收藏  |  浏览/下载:26/0  |  提交时间:2016/10/27
Study on a method of dispensing calibration for photoresist pump based on support vector machine 会议论文  OAI收割
2015 IEEE International Conference on Cyber Technology in Automation, Control, and Intelligent Systems (CYBER), Shenyang, China, June 8-12, 2015
作者:  
Zhang JL(张吉龙);  Hu JT(胡静涛);  Cao YX(曹云侠);  Chi HD(迟浩东)
收藏  |  浏览/下载:17/0  |  提交时间:2015/12/24
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:26/0  |  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.  
Embedded system of time uniform based on DSP (EI CONFERENCE) 会议论文  OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
作者:  
Li N.;  Liu C.-X.;  Liu C.-X.;  Chen J.;  Guo L.-H.
收藏  |  浏览/下载:23/0  |  提交时间:2013/03/25
We introduced a design method of DSP-based System of time uniform  which combine the GPS and the Compass to calibrate the time. The system can use UTC (Coordinated Universal Time) of the GPS or the Compass for time base  to generate absolute time and different frequency of synchronous signals. We used DSP (Digital Signal Processor) to calculate the satellite information which includes the UTC time. After getting the UCT time information  put it into the CPLD (Complex Programmable Logic Device) for correction of time delay and serialization to output. Meanwhile  we divided 1PPS (one-pulse-per-second) signal of the GPS and the Compass into 20Hz  50Hz  and 800Hz synchronous signal. And we analyzed the precision of time and frequency. To conclude  the uncertainty of system absolute time is less than 100ns  the uncertainty of system synchronous signals is less than 20ns. This system is easy and flexible for use  stable and reliable in performance. 2010 IEEE.  
Inspection focus technology of space tridimensional mapping camera based on astigmatic method (EI CONFERENCE) 会议论文  OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology, April 26, 2010 - April 29, 2010, Dalian, China
作者:  
Wang Z.;  Wang Z.;  Zhang L.;  Zhang L.
收藏  |  浏览/下载:25/0  |  提交时间:2013/03/25
The CCD plane of the space tridimensional mapping camera will be deviated from the focal plane(including the CCD plane deviated due to camera focal length changed)  under the condition of space environment and vibration  impact when satellite is launching  image resolution ratio will be descended because defocusing. For tridimensional mapping camera  principal point position and focal length variation of the camera affect positioning accuracy of ground target  conventional solution is under the condition of vacuum and focusing range  calibrate the position of CCD plane with code of photoelectric encoder  when the camera defocusing in orbit  the magnitude and direction of defocusing amount are obtained by photoelectric encoder  then the focusing mechanism driven by step motor to compensate defocusing amount of the CCD plane. For tridimensional mapping camera  under the condition of space environment and vibration  impact when satellite is launching  if the camera focal length changes  above focusing method has been meaningless. Thus  the measuring and focusing method was put forward based on astigmation  a quadrant detector was adopted to measure the astigmation caused by the deviation of the CCD plane  refer to calibrated relation between the CCD plane poison and the asrigmation  the deviation vector of the CCD plane can be obtained. This method includes all factors caused deviation of the CCD plane  experimental results show that the focusing resolution of mapping camera focusing mechanism based on astigmatic method can reach 0.25 m. 2010 Copyright SPIE - The International Society for Optical Engineering.  
An Automatic Stain Removal Algorithm of Series Aerial Photograph Based on Flat-field Correction 会议论文  OAI收割
Image and Signal Processing for Remote Sensing Xvi, Bellingham
Wang, Gang; Yan, Dongmei; Yang, Yang
收藏  |  浏览/下载:18/0  |  提交时间:2014/12/07
The calibration of faint simulation star magnitude based on single photon count technique (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications, June 17, 2009 - June 19, 2009, Beijing, China
作者:  
Xu S.-Y.;  Guo J.;  Guo J.
收藏  |  浏览/下载:32/0  |  提交时间:2013/03/25
A calibration method of faint star magnitude of the star scene simulation device is proposed in this paper. In the research of simulation star magnitude  luminometers and CCD devices are the general calibration devices which are used to measure the illumination intensity and calibrate its magnitude. But if the simulation magnitude is only sixth magnitude  its illumination intensity is only 1.010-8 Lux. This illumination intensity level is the lowest illumination intensity that the commercial luminometer can detect. Hence the simulation star magnitude lower than six magnitude cannot be calibrated by luminoters. Likewise CCD devices also need an additive cooler in this case. When the single photon characteristic is presented due to the low luminosity of simulating light sources  the simulation star magnitude can be calibrated by detecting its photon flux of radiation with the method of single photon count. In this paper the detection principle of single photon based on a compact designed PMT detecting of the radiation level of simulation star magnitude is advanced. Especially a spectrum match method is proved theoretically to be an effective means for selecting PMT photosensitive type. In the case of the detection object of the simulation star in visible wavelength  a analysis indicates that the material of tri-alkali cathode materials its best choice after being compared the Signal-to-Noise of photon detector of several PMT photosensitive materials based on the different spectrum match ratio of different object light sources and different cathode materials. An experiment is employed to show the relationship of control voltage of PMT and its dark counter  the relationship of the environment temperature of PMT and its dark counter  which proves its only decades of CPS at room temperature. The so low dark counter avoids a bulky cooler and is convenient for installing it on the star scene simulation equipment. Finally in the experiment of calibrating the simulation star magnitudes the ability of its calibration is confirmed to reaches up to 12m  meanwhile its calibration error is within 0.2m. 2009 SPIE.  
Study and calibration of azimuth effect in multi-position strap-down north seeking system (EI CONFERENCE) 会议论文  OAI收割
7th World Congress on Intelligent Control and Automation, WCICA'08, June 25, 2008 - June 27, 2008, Chongqing, China
作者:  
Wang Z.;  Zhao J.;  Wang Z.
收藏  |  浏览/下载:10/0  |  提交时间:2013/03/25
In order to reduce the influence of azimuth effect in multi-position strap-down north seeking system  its cause of formation is studied based on the precession principle of the dynamically tuned gyro. A detecting system  composed by true north prism  two Leica theodolites and benchmark prism fixed in the strap-down north seeking system  was designed to calibrate the azimuth effect. By two steps  many measurements are gone on in every position to eliminate the random error. According to the homologous between the error and the position  a sinusoid is made a fit as compensate curve after the error of twelve positions is measured. Then the azimuth effect of the arbitrary position can be corrected by the curve. The experiment result shows that the seeking north standard deviation is only 11.77 after compensation  which is considerably less than the 87.75 without correction. 2008 IEEE.