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浏览/检索结果: 共68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 Scientific preparation for JRT: Wind pressure prediction model for large radio telescope based on real data from multi-sensors 期刊论文  OAI收割 HELIYON, 2024, 卷号: 10, 期号: 18 作者:  Wu, Rui;  Cao, Zhong;  Wang, Feng;  Rao, Rui;  Huang YX(黄玉祥)   |  收藏  |  浏览/下载：18/0  |  提交时间：2024/09/30 Wind pressure prediction  Large radio telescope  Variational mode decomposition  Pointing accuracy  Multi-sensors   The Qitai radio telescope 期刊论文  OAI收割 SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2023, 卷号: 66, 期号: 8, 页码: 12 作者:  Wang, Na;  Xu, Qian;  Ma, Jun;  Liu, Zhiyong;  Liu, Qi   |  收藏  |  浏览/下载：28/0  |  提交时间：2023/11/14 radio telescope  radio astronomy  observation  receiver  RFI   Measurement and Correction of Pointing Error Caused by Radio Telescope Alidade Deformation based on Biaxial Inclination Sensor 期刊论文  OAI收割 MICROMACHINES, 2023, 卷号: 14, 期号: 7, 页码: 14 作者:  Xu, Qian;  Xue, Fei;  Wang, Hui;  Yi, Letian   |  收藏  |  浏览/下载：10/0  |  提交时间：2023/11/21 inclinometer  pointing errors  radio telescope  alidade  thermal gradients  track unevenness   A short review on the pulsar magnetic inclination angles 期刊论文  OAI收割 ASTRONOMISCHE NACHRICHTEN, 2023, 页码: 10 作者:  Li, Biao-Peng;  Gao, Zhi-Fu   |  收藏  |  浏览/下载：37/0  |  提交时间：2023/03/01 pulsar  magnetic inclination angle  braking index  Nanshan 25-m Radio Telescope   Research on Expanding the Field of View of Phased Array Feed 会议论文  OAI收割 Chengdu, China, 26-29 Aug. 2022 作者:  Wang, Kai;  Chen, Mao Zheng;  Yan, Hao;  Cao, Liang;  Ma, Jun   |  收藏  |  浏览/下载：15/0  |  提交时间：2023/06/28 Phased arrays  Wireless communication  Radio astronomy  Telescopes  Microwave communication  Apertures  Electromagnetic compatibility  radio telescope  receiver  phased array feed  beam scanning  field of view   Array Design of Phased Array Feed at 1.25GHz 会议论文  OAI收割 Chengdu, China, 26-29 Aug. 2022 作者:  Yan, Hao;  Wang, Kai;  Cao, Liang;  Chen, Mao Zheng;  Ma, Jun   |  收藏  |  浏览/下载：17/0  |  提交时间：2023/06/28 Phased arrays  Wireless communication  Time-frequency analysis  Layout  Receivers  Telescopes  Reflector antennas  radio telescope  receiver  phased array feed  array antenna   Time-dependent short-term observational scheduling method for Yunnan 40 m Radio Telescope using a genetic algorithm 期刊论文  OAI收割 ASTROPHYSICS AND SPACE SCIENCE, 2022, 卷号: 367, 期号: 9 作者:  Wei, Shoulin;  Wei, Bingtao;  Chen, Yanjun;  Hao LF(郝龙飞);  Huang YX(黄玉祥)   |  收藏  |  浏览/下载：35/0  |  提交时间：2022/10/13 Dynamic scheduling  Genetic algorithm  Radio telescope  Observational scheduling  Short-term scheduling   导航卫星信号对天马65 m射电望远镜的干扰分析 期刊论文  OAI收割 中国科学. 物理学, 力学, 天文学, 2022, 卷号: 52, 期号: 3 作者:  孙正雄;  王锦清;  虞林峰;  陈校非;  苟伟   |  收藏  |  浏览/下载：14/0  |  提交时间：2023/12/13 interference  sensitivity  radio telescope  simulation  measurement  干扰  灵敏度  射电望远镜  仿真  测量   Detection of Flare Multiperiodic Pulsations in Mid-ultraviolet Balmer Continuum, Lyl Hard X-Ray, and Radio Emissions Simultaneously 期刊论文  OAI收割 The Astrophysical Journal, 2021, 卷号: 921, 页码: 179 作者:  HXMT   |  收藏  |  浏览/下载：23/0  |  提交时间：2022/02/08 Solar flares  Solar oscillations  Solar ultraviolet emission  Solar  x-ray emission  Solar radio emission  1496  1515  1533  1536  1522  Astrophysics - Solar and Stellar Astrophysics  Abstract: Quasi-periodic pulsations (QPPs), which usually appear as temporal pulsations of the total flux, are frequently detected in the light curves of solar/stellar flares. In this study, we present the investigation of nonstationary QPPs with multiple periods during the impulsive phase of a powerful flare on 2017 September 6, which were simultaneously measured by the Hard X-ray Modulation Telescope (Insight-HXMT), as well as the ground-based BLENSW. The multiple periods, detected by applying a wavelet transform and Lomb-Scargle periodogram to the detrended light curves, are found to be ~20-55 s in the Ly`and mid-ultraviolet Balmer continuum emissions during the flare impulsive phase. Similar QPPs with multiple periods are also found in the hard X-ray emission and low-frequency radio emission. Our observations suggest that the flare QPPs could be related to nonthermal electrons accelerated by the repeated energy release process, i.e., triggering of repetitive magnetic reconnection, while the multiple periods might be modulated by the sausage oscillation of hot plasma loops. For the multiperiodic pulsations, other generation mechanisms could not be completely ruled out.   Real-time temperature estimation method for electromagnetic performance improvement of a large axisymmetric radio telescope under solar radiation 期刊论文  OAI收割 Iet Microwaves Antennas & Propagation, 2020, 卷号: 14, 期号: 13, 页码: 1635-1642 作者:  Lian, Peiyuan;  Wang, Congsi;  Xu, Qian;  Xiang, Binbin;  Shi, Yu   |  收藏  |  浏览/下载：40/0  |  提交时间：2021/06/25 radiotelescopes  temperature sensors  reflector antennas  solar  radiation  temperature database  table look-up method  temperature field  estimation speed  real-time estimated temperature field  temperature  sensors  real-time compensation  axisymmetric telescopes  time  temperature estimation method  electromagnetic performance improvement  axisymmetric radio telescope  solar radiation  electromagnetic  performances  EM performance improvements  temperature simulation  fast  estimation method  transient temperature field simulation  high-frequency radio telescopes  large-aperture radio telescopes  reflector antenna  reflector antennas  surface error  adjustment  pattern  field  Engineering  Telecommunications