机构

• 长春光学精密机械与物... [1]
• 国家天文台 [1]
• 沈阳自动化研究所 [1]

采集方式

• OAI收割 [3]

内容类型

• 会议论文 [2]
• 期刊论文 [1]

发表日期

• 2020 [1]
• 2019 [1]
• 2012 [1]

学科主题

筛选

浏览/检索结果: 共3条，第1-3条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择提交时间升序提交时间降序发表日期升序发表日期降序题名升序题名降序作者升序作者降序 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：14/0  |  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   Bidirectional-GRU based on attention mechanism for aspect-level Sentiment Analysis 会议论文  OAI收割 Zhuhai, China, February 22-24, 2019 作者:  Zhang DY(张丁一);  Zhai PH(翟鹏华)   |  收藏  |  浏览/下载：85/0  |  提交时间：2019/06/18 sentimental analysis  deep learning  machine learning  attention mechanism  aspect-level   A brightness and color correction method of LED display based on CCD camera (EI CONFERENCE) 会议论文  OAI收割 2012 International Applied Mechanics, MechatronicsAutomation and System Simulation Meeting, AMMASS 2012, June 24, 2012 - June 26, 2012, Hangzhou, China 作者:  Wang R. 收藏  |  浏览/下载：15/0  |  提交时间：2013/03/25 The correction methods of LED displays are aiming to address the uniform issues which includes brightness aspect and color aspect. The correction method use a 33 correction coefficients matrix to reshape the pulse width of each LED. To calculate the correction coefficients  a linear system is established  which includes a color CCD and a LED display. And a correction algorithm is introduced based on the color CCD. This algorithm describes the relationships of the main color components of a LED  when the gray level of a LED is increasing or decreasing  the three main color components would change according to the correction coefficients. The results shows that the correction based on this algorithm improved the performance of LED displays. (2012) Trans Tech Publications  Switzerland.