中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共8条，第1-8条

帮助

条数/页：排序方式：
	Recent Advances in Pedestrian Inertial Navigation Based on Smartphone: A Review 期刊论文 OAI收割 IEEE SENSORS JOURNAL, 2022, 卷号: 22, 期号: 23, 页码: 22319-22343 作者: Wang, Qu; Fu, Meixia; Wang, Jianquan; Luo, Haiyong; Sun, Lei \| 收藏 \| 浏览/下载：30/0 \| 提交时间：2023/07/12 Indoor positioning inertial navigation pedestrian dead reckoning (PDR) performance evaluation
	Recent Advances in Pedestrian Navigation Activity Recognition: A Review 期刊论文 OAI收割 IEEE SENSORS JOURNAL, 2022, 卷号: 22, 期号: 8, 页码: 7499-7518 作者: Wang, Qu; Luo, Haiyong; Wang, Jianquan; Sun, Lei; Ma, Zhangchao \| 收藏 \| 浏览/下载：35/0 \| 提交时间：2022/12/07 Activity recognition Sensors Navigation Legged locomotion Performance evaluation Hidden Markov models Feature extraction Pedestrian positioning human activity recognition pedestrian navigation activity public dataset
	An Investigation of Precise Orbit and Clock Products for BDS-3 from Different Analysis Centers 期刊论文 OAI收割 SENSORS, 2021, 卷号: 21, 期号: 5, 页码: 15 作者: Shen, Pengli; Cheng, Fang; Lu, Xiaochun; Xiao, Xia; Ge, Yulong \| 收藏 \| 浏览/下载：22/0 \| 提交时间：2021/11/29 BDS-3 tropospheric delay positioning performance precise point positioning (PPP) orbit comparison clock differences analysis centers
	Applications of differential barometric altimeter in ground cellular communication positioning network 期刊论文 OAI收割 IET SCIENCE MEASUREMENT & TECHNOLOGY, 2020, 卷号: 14, 期号: 3, 页码: 322-331 作者: Hu, Zhengqun; Zhang, Lirong; Ji, Yuanfa \| 收藏 \| 浏览/下载：25/0 \| 提交时间：2021/12/06 cellular radio height measurement measurement errors Global Positioning System altimeters barometers least squares approximations Kalman filters surface fitting spread spectrum communication compensation matrix algebra GPS signal message structure power spectrum spread spectrum ranging signal fitting parameters least-square solution calibration compensation system noise variance matrix measurement noise variance matrix multibase station correction height information correction calculation DBA system systematic performance differential barometric altimeter ground cellular communication positioning network measurement datum distribution altitude positioning error Global Positioning System differential barometric altimetry system systematic implementation level continuous altitude measurement precise altitude measurement DBA systematic implementation aspect two dimensional curved surface fitting function sensor measurement correction filtering effect Kalman filter measuring station multiBSs navigation fusion
	Assessment of the positioning performance and tropospheric delay retrieval with precise point positioning using products from different analysis centers 期刊论文 OAI收割 GPS SOLUTIONS, 2020, 卷号: 24, 期号: 1, 页码: 11 作者: Zhou, Feng; Cao, Xinyun; Ge, Yulong; Li, Weiwei \| 收藏 \| 浏览/下载：26/0 \| 提交时间：2020/11/10 GNSS Precise point positioning (PPP) Positioning performance Tropospheric delay Analysis center
	基于1mcpss码速率的亚欧卫星双向时间比对性能分析期刊论文 OAI收割天文学报, 2019, 卷号: 60, 期号: 6 作者: 王翔; 董绍武; 武文俊; 宋会杰; 王威雄 \| 收藏 \| 浏览/下载：82/0 \| 提交时间：2020/11/09 two-way satellite time and frequency transfer precise point positioning link calibration performance analysis 卫星双向时间传递精密单点定位链路校准性能分析
	Design and experimental research of a new type focus mechanism used in space-based telescope (EI CONFERENCE) 会议论文 OAI收割 2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012, August 5, 2012 - August 8, 2012, Chengdu, China 作者: Wang D. 收藏 \| 浏览/下载：37/0 \| 提交时间：2013/03/25 The position of focal plane will be changed because of temperature fluctuation and vacuum environment. In order to make the telescope work well positioning accuracy of the mechanism is 0.008mm. The performance satisfies the need of precision a focusing mechanism is needed. To majority of large space-based telescopes and the scheme design is reasonable and practicable. 2012 IEEE. the general way to do this would be to use a reflector which was located in the backfocal distance. One of typical schemes of this mechanism was introduced however because of the big axial size the mechanism can't be used when the size of the enclosure was limited. A new type of focusing mechanism was introduced which has such advantages of small size high accuracy and low mass. The design and test methods had been discussed. According to the results the repeatability positioning accuracy is 0.0025mm
	Analysis of inversion errors of ionospheric radio occultation 期刊论文 OAI收割 Gps Solutions, 2009, 卷号: 13, 期号: 3, 页码: 231-239 Wu, X. C.; Hu, X.; Gong, X. Y.; Zhang, X. X.; Wang, X. 收藏 \| 浏览/下载：21/0 \| 提交时间：2014/04/30 Ionospheric radio occultation Error source Simulation Asymmetry of electron density COSMIC electron-density profiles global positioning system atmosphere champ performance venus