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浏览/检索结果: 共7条，第1-7条 帮助 限定条件 专题：长春光学精密机械与物理研究所    第一署名单位    第一作者单位    通讯作者单位     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Geometric correction for TanSat atmospheric carbon dioxide grating spectrometer 期刊论文 Sensors and Actuators a-Physical, 2019, 卷号: 293, 页码: 62-69 作者:  H.Zhang;  Y.Q.Zheng;  S.Li;  C.Lin;  C.L.Li 收藏  |  浏览/下载：1/0  |  提交时间：2020/08/24 Geometric correction,Centroid position,Deflection error,spectral calibration,optical-system,design,Engineering,Instruments & Instrumentation   Off-axis scanning three-grating monochromator 期刊论文 Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering, 2018, 卷号: 47, 期号: 2 作者:  Chen, Jianjun;  Cui, Jicheng;  Liu, Jia'nan;  Yang, Jin;  Sun, Ci 收藏  |  浏览/下载：27/0  |  提交时间：2019/09/17 Monochromators  Calibration  Diffraction gratings  Optical design  Scanning  Spectral resolution  Spectrometers  Stray light  Wheels  Worm gears   Design and analysis of a worm gear turntable off-axis assembly method in a three-grating monochromator 期刊论文 Applied Optics, 2018, 卷号: 57, 期号: 10, 页码: 2647-2652 作者:  Chen, J. J.;  Cui, J. C.;  Yao, X. F.;  Liu, J. N.;  Sun, C. 收藏  |  浏览/下载：9/0  |  提交时间：2019/09/17 spectral responsivity  calibration  Optics   Study on spectrograph for ionosphere: A broadband imaging instrument prototype for far-ultraviolet (EI CONFERENCE) 会议论文 International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China Yu L.; Wang S.-R.; Lin G.-Y. 收藏  |  浏览/下载：21/0  |  提交时间：2013/03/25 Current research on space-based exploration for the ionosphere needs more advanced technologies. Because the spectral signals in the ionosphere distributing basically in the far-ultraviolet waveband are very weak. Usual spectrometer structures and detectors such as CCD can't receive enough information. Based on this principle of atmospheric sounding  the imaging spectrometer prototype for ionosphere detection application was designed to solve the problem. This prototype consists of the telescope and the imaging spectrometer. The simple structure and small number of mirrors can help higher transmission efficiency be achieved and weak signals detection be implemented. The telescope is an off-axis parabolic mirror and the spectrometer is a modified Czerny-Turner spectral imaging system. Modified Czerny-Turner spectrometer contains a spherical mirror  a fixed plane grating and a toroidal mirror. By adjusting the incident angle to the collimating mirror and using toroidal mirror  coma and astigmatism were corrected well. We also optimize distances between the grating to the focusing mirror and the focusing mirror to the image plane to improve disadvantages of traditional Czerny-Turner structure. Designed results demonstrate that aberrations are substantially corrected  and high image quality can be obtained in broad waveband. The photon counting Wedge-Strip-Anode detector with micro-channel planes as the receiving plane is accepted for the instrument prototype. The other photon counting 2-D detector responding well for weak light such as Cross-Delay line detector and MAMA detector can also be used for detection. The calibration and performances testing system is made of a vacuum system  a deuterium lamp  a monochrometer and the instrument prototype. Results obtained from the experiment show that the spectral resolution is 2.4 nm and the spatial resolution is 80 m. The other calibration experiments are running. The technology of the spectrometer prototype is important for the research and applications of ionosphere remote sensing. 2011 SPIE.   Level 0 and level 1 data processing for a type of hyper-spectral imager (EI CONFERENCE) 会议论文 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：63/0  |  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   The performance test and the application of CCD (EI CONFERENCE) 会议论文 International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications, June 17, 2009 - June 19, 2009, Beijing, China Wang S.-R.; Yang X.-H.; Li F.-T.; Zhang Z.-D.; Qu Y. 收藏  |  浏览/下载：13/0  |  提交时间：2013/03/25 The e2v technologies' CCD sensor CCD57-10  which will be used as a detector in the Limb UV Imaging Spectrometer  is tested at first. Then the spectral responsivity calibration of the whole Imaging Spectrometer simply is described. The error analysis and the correction of the test of CCD's parameters under good repeatability and stability indicate that the properties of the CCD are suitable to the Limb UV Imaging Spectrometer. The spectral responsivity calibration and the theoretical calculation of the whole Imaging Spectrometer are within an acceptable error level. 2009 SPIE.   UV-VUV spectral irradiance responsivity calibration for space remote sensing spectroradiometer (EI CONFERENCE) 会议论文 Advanced Materials and Devices for Sensing and Imaging III, November 12, 2007 - November 14, 2007, Beijing, China Yu H.; Shurong W.; Guanyu L.; Longqi W. 收藏  |  浏览/下载：14/0  |  提交时间：2013/03/25 In order to overcome the irradiance responsivity calibration troubles caused by the weak response of most spectral radiometers in ultraviolet band and poor ratio of signal to noise  and to meet special calibration condition for some remote sensing spectroradiometers in space  a spectral irradiance responsivity calibration unit based on parallel light illumination mode is established  it is composed of a 150W deuterium lamp and a spherical mirror. The calibration unit gets the output standard value of spectral irradiance by irradiance transfer  this way avoids the spectral reflectance measurement difficulty of the spherical mirror. A flight spectral radiometer model used for space remote sense was calibrated in range from 160nm to 300nm  the calibration error of spectral irradiance responsivity is 4.7%. Some factors which contribute to calibration uncertainties are discussed.