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• OAI收割 [38]

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• 会议论文 [26]
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筛选

浏览/检索结果: 共38条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Comparison of simulated backgrounds with in-orbit observations for HE, ME, and LE onboard Insight-HXMT 期刊论文  OAI收割 Astrophysics and Space Science, 2020, 卷号: 365, 页码: 158 作者:  HXMT   |  收藏  |  浏览/下载：48/0  |  提交时间：2022/02/08 Insight-HXMT  Geant4 simulation  Background observation  Astrophysics  - Instrumentation and Methods for Astrophysics  Abstract: Insight-HXMT, the first X-ray astronomical satellite in China, aims to reveal new sources in the Galaxy and to study fundamental physics of X-ray binaries from 1 to 250 keV. It has three collimated telescopes, the High Energy X-ray telescope (HE), the Medium Energy X-ray telescope (ME), and the Low Energy X-ray telescope (LE). Before the launch, in-orbit backgrounds of these three telescopes had been estimated through Geant4 simulation, in order to investigate the instrument performance and the achievement of scientific goals. In this work, these simulated backgrounds are compared with in-orbit observations. Good agreements are shown for all three telescopes. For HE, (1) the deviation of the simulated background rate after two years of operation in space is 5 % from the observation  (2) the total background spectrum and the relative abundance of the 67 keV line show long-term increases both in simulations and observations. For ME, (1) the deviation of simulated background rate is within 15 % from the observation, and (2) there are no obvious long-term increase features in the background spectra of simulations and observations. For LE, the background level given by simulations is also consistent with observations. The consistencies of these comparisons validate that the Insight-HXMT mass model, i.e., space environment components and models adopted, physics processes selected, and detector constructions built, is reasonable. However, the line features at 7.5 and 8.0 keV, which are obvious in the observed spectra of LE, are not evident in simulations. This might result from uncertainties in the LE constructions.   A review on control methodologies of disturbance rejections in optical telescope 期刊论文  OAI收割 OPTO-ELECTRONIC ADVANCES, 2019, 卷号: 2, 期号: 10 作者:  Tang, Tao;  Niu, Shuaixu;  Ma, Jiaguang;  Qi, Bo;  Ren, Ge   |  收藏  |  浏览/下载：43/0  |  提交时间：2021/05/06 structural vibrations  astronomical telescope  Q-filter  error-based DOBC  Tip-Tilt mirror   Vibration rejection of Tip-Tilt mirror using improved repetitive control 期刊论文  OAI收割 Mechanical Systems and Signal Processing, 2019, 卷号: 116, 页码: 432-442 作者:  Tang, T.;  Xu Niu, S.;  Yang, T.;  Qi, B.;  Liang Bao, Q.   |  收藏  |  浏览/下载：34/0  |  提交时间：2021/05/06 Astronomical telescope  Tip-Tilt mirrors  Repetitive controller  Vibrations control   墨玉县天文科普教育基地望远镜操作手册 研究报告  OAI收割 2018 作者:  白春海   |  收藏  |  浏览/下载：44/0  |  提交时间：2019/07/10 太阳望远镜  光学望远镜  天文科普  数据共享  Solar telescope  optical telescope  astronomical science  data sharing   Design and implementation of PFB module with 10G network transmission system in CDAS2 期刊论文  OAI收割 JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS, 2018, 卷号: 4, 期号: 4, 页码: 11 作者:  Yu, Wei;  Zhu, Renjie;  Chen, Lan;  Wu, Yajun;  Zhang, Xiuzhong   |  收藏  |  浏览/下载：41/0  |  提交时间：2019/06/20 very long baseline interferometry  polyphase filter banks  digital baseband converter  10G network  radio astronomical telescope   Research on the fault diagnosis and self-healing technology of unattended Antarctic telescope 会议论文  OAI收割 SPIE Ground-based and Airborne Telescopes VII（Vol.10700）, Austin, Texas, United States, 2018-6-10 作者:  Yun Li;  Shihai Yang   |  收藏  |  浏览/下载：36/0  |  提交时间：2019/02/12 Astronomical telescope  Fault diagnosis  Self-healing  Intelligent  Expert system   Application of Intelligent Fuzzy PID Control Algorithm in Large Astronomical Telescope Tracking System 会议论文  OAI收割 SPIE Ground-based and Airborne Telescopes VII（vol.10700）, Austin, Texas, United States, 2018-6-10 作者:  Xiajie Zhang;  Changzhi Ren   |  收藏  |  浏览/下载：41/0  |  提交时间：2019/02/02 Astronomical telescope  Direct drive  Nonlinear disturbance  Intelligent fuzzy control   Research for Diagnosing Electronic Control Fault of Astronomical Telescope’s Armature Winding by Step Signal 会议论文  OAI收割 SPIE Vol.9682, Suzhou, China, 2016-4-26 作者:  Zhang Yulong;  Yang Shihai;  Gu Bozhong 收藏  |  浏览/下载：17/0  |  提交时间：2017/01/19 Astronomical telescope  Armature winding  Fault diagnosis  Step signal  MATLAB/Simulink   Studying solutions for the fatigue of the FAST cable-net structure caused by the process of changing shape 期刊论文  OAI收割 RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2015, 卷号: 15, 期号: 10, 页码: 1758-1772 作者:  Jiang, Peng;  Nan, Ren-Dong;  Qian, Lei;  Yue, You-Ling 收藏  |  浏览/下载：26/0  |  提交时间：2016/09/27 five-hundred-meter aperture spherical radio telescope  fatigue resistance  astronomical techniques and approaches  cable-net structure  finite element   Studying solutions for the fatigue of the FAST cable-net structure caused by the process of changing shape 期刊论文  OAI收割 RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2015, 卷号: 15, 期号: 10, 页码: 1758-1772 作者:  Jiang, Peng;  Nan, Ren-Dong;  Qian, Lei;  Yue, You-Ling;  Nan Rendong 收藏  |  浏览/下载：12/0  |  提交时间：2016/11/09 five-hundred-meter aperture spherical radio telescope  fatigue resistance  astronomical techniques and approaches  cable-net structure  finite element