机构

• 高能物理研究所 [2]
• 长春光学精密机械与物... [1]

采集方式

• OAI收割 [3]

内容类型

• 期刊论文 [2]
• 会议论文 [1]

发表日期

• 2010 [1]
• 2009 [1]
• 2005 [1]

学科主题

• Biochemist... [1]
• Chemistry [1]

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 Progress of diffraction enhanced imaging at the Beijing Synchrotron Radiation Facility 期刊论文  OAI收割 ANALYTICAL AND BIOANALYTICAL CHEMISTRY, 2010, 卷号: 397, 期号: 6, 页码: 2067-2078 作者:  Zhang K(张凯);  Zhu PP(朱佩平);  Yuan QX(袁清习);  Huang WX(黄万霞);  Liu XS(刘小松) 收藏  |  浏览/下载：16/0  |  提交时间：2016/06/29 Phase-contrast image  Computed technology  Diffraction-enhanced imaging  Synchrotron radiation   In Situ Observation of the Microstructure-evolution in Silicon Nitride Ceramics Sintering by Synchrotron Radiation X-ray Computed Tomography 期刊论文  OAI收割 ACTA CHIMICA SINICA, 2009, 卷号: 67, 期号: 11, 页码: 1205-1210 作者:  Xu, F;  Hu, XF;  Zhao, JH;  Yuan, QX;  Yuan QX(袁清习) 收藏  |  浏览/下载：25/0  |  提交时间：2016/06/29 analysis and testing technology of materials  sintering  synchrotron radiation X-ray computed tomography  silicon nitride ceramic  microstructure evolution   Error analysis and test study of fiber optic gyroscope north-finder (EI CONFERENCE) 会议论文  OAI收割 Advanced Sensor Systems and Applications II, November 8, 2004 - November 12, 2004, Beijing, China Zhang Z.; Sun J.; Wu K. 收藏  |  浏览/下载：22/0  |  提交时间：2013/03/25 North-finder system is an important application of the inertial technology. It provides true north azimuth information to f all kinds of ground-based equipment. This paper designed a dynamic automatic north-finder based on the modulation output of fiber optic gyroscope (FOG). In this scheme  the sine output signal of the FOG was sampled and disposed  and then the real north of surveyed point on the surface of earth was calculated. The deviation caused by the base tilt was compensated by an accelerator. The output signals of FOG and accelerator were computed combined with the position sampled from increasing encoder by digital signal processor. Successive rotating technique was adopted to modulate the FOG signal periodically. Most of the low frequency part of random gyro drift errors was compensated. The north-finder accuracy was improved compared with the traditional static measuring method. The test result shows the FOG automatic north-finder obtains 2' true north angle accuracies within not more than three minutes  can meet the orientation need of artillery  terrain measurement vehicle  armored car  unmanned drive vehicle  geodetic survey and tunnel exploration.