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浏览/检索结果: 共4条，第1-4条 帮助 限定条件 内容类型：会议论文     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 Spatial heterodyne spectroscopy for long-wave infrared: optical design and laboratory performance 会议论文 Beijing, PEOPLES R CHINA, 2020-11-30 作者:  Han, Bin;  Feng, Yutao;  Zhang, Zhaohui;  Bai, Qinglan;  Wu, Junqiang 收藏  |  浏览/下载：18/0  |  提交时间：2021/07/16 Spatial heterodyne spectroscopy  long-wave infrared  optical design  interferogram   Recent progress of push-broom infrared hyper-spectral imager in SITP 会议论文 作者:  Wang YM;  Hu WD;  Shu R;  Li CL;  Yuan LY 收藏  |  浏览/下载：19/0  |  提交时间：2018/11/20 Performance evaluation of a prototype pneumatic driver for MR elastography by MR elastography 会议论文 2011 4th International Conference on Biomedical Engineering and Informatics, BMEI 2011, Shanghai, China 作者:  WeiRui Cai;  Hui Wang;  WenHui Huang;  Yiu-Cho Chung;  LiJuan Zhang 收藏  |  浏览/下载：6/0  |  提交时间：2015/08/25 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：20/0  |  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.