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浏览/检索结果: 共5条，第1-5条 帮助

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Design and Testing of the Front-End Electronics of WCDA in LHAASO 期刊论文  OAI收割
IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 2021, 卷号: 68, 期号: 8, 页码: 2257-2267
作者:  Aharonian, F.;  An, Q.;  Axikegu;  Bai, L. X.;  Bai, Y. X.
  |  收藏  |  浏览/下载：98/0  |  提交时间：2021/09/10
多通道精密时间间隔测量系统的硏制 期刊论文  OAI收割
电子测量与仪器学报, 2013, 卷号: 27, 期号: 1, 页码: 69
作者:  辜新宇;  郭际;  施韶华;  李孝辉
  |  收藏  |  浏览/下载：0/0  |  提交时间：2023/12/13
Station mode for attitude determination of small-multi-target with high speed (EI CONFERENCE) 会议论文  OAI收割
2010 International Conference on E-Product E-Service and E-Entertainment, ICEEE2010, November 7, 2010 - November 9, 2010, Henan, China
作者:  Wang J.;  Zhao L.;  Li M.
收藏  |  浏览/下载：25/0  |  提交时间：2013/03/25
A key problem of attitude measurement of small-multi-target with high speed is how to decide the optimum of the CMOS stations. A multi-CMOS station mode is designed in this paper  multiple CMOS videos were placed on two parallel sides in measurement system  every two CMOS form an intersection viewing field  multiple viewing field join to cover shooting range  which can augment Effective Viewing Field(EVF)  increase capture ratio of objects with high speed and measurement precision of small objects. When an object passes through the joint area  it will be imaged separately on each CMOS focal plane. Multiple CMOS videos were triggered synchronously  a sequence of image information was extracted  the target attitude was confirmed by digital image processing technology. The merit of station mode is low cost  large measurement scope  extending freely and so on. 2010 IEEE.  
Level 0 and level 1 data processing for a type of hyper-spectral imager (EI CONFERENCE) 会议论文  OAI收割
2009 International Conference on Optical Instruments and Technology, OIT 2009, October 19, 2009 - October 21, 2009, Shanghai, China
Li X.; Yan C.
收藏  |  浏览/下载：74/0  |  提交时间：2013/03/25
Hyper-spectral imaging (HSI) is a kind of optical remote sensor that can simultaneously obtain spatial and spectral information of ground targets. We are now designing a data processing system for a type of space-borne push-broom HSI  then it performs radiometric and spectral calibration based on the ground calibration results and onboard calibration collection. The detailed algorithms for bad pixel replacement  which has 128 spectral channels covering the spectral range from 400nm to 2500nm. With its large amount of spectral channels  radiometric and spectral calibration were presented. After processing  the HSI collects large volume of spectral imaging data need to be efficiently and accurately processed and calibrated. In this paper  the digital numbers downlinked from the spacecraft can be converted into at-sensor absolute spectral radiance of ground targets  the detailed Level 0 and Level 1 data processing steps for the HSI were presented. The Level 0 processing refers to a set of tasks performed on the data downlinked from the spacecraft  thus providing accurate quantified spectral imaging data for various applications. 2009 SPIE.  including decoding to extract science data  separating the science data into files corresponding to different tasks (e.g. ground imaging  dark imaging  and onboard calibration)  checking data integrity and instrument settings  data format conversion  and Level 0 files creation. The Level 1 processing performs several steps on Level 0 data. Firstly  it corrects the image artifacts (mostly the SWIR smear effect)  subtracts the dark background  and performs the bad pixel replacement according to the prelaunch measurement  
An improved cat's-eye retroreflector used in a laser tracking interferometer system 期刊论文  OAI收割
MEASUREMENT SCIENCE & TECHNOLOGY, 2003, 卷号: 14, 期号: 6, 页码: N36-N40
作者:  Lin, YB;  Zhang, GX;  Li, Z
  |  收藏  |  浏览/下载：43/0  |  提交时间：2019/12/16