机构

• 长春光学精密机械与物... [2]
• 心理研究所 [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]
• 2009 [1]
• 2008 [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： 请选择题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序作者升序作者降序 Human Performance Analysis of Processes for Retrieving Beidou Satellite Navigation System During Breakdown 期刊论文  OAI收割 FRONTIERS IN PSYCHOLOGY, 2020, 卷号: 11, 页码: 9 作者:  Wu, Mo;  Zhang, Liang;  Li, Wen-Chin;  Wan, Lingyun;  Lu, Ning   |  收藏  |  浏览/下载：21/0  |  提交时间：2020/05/18 satellite navigation system  fault handling  task complexity  time of day  shift handover  team skill level  incident-based analysis   Rigorous vector analysis of diffractive microlens by using of finitedifference time-domain method (EI CONFERENCE) 会议论文  OAI收割 2009 International Conference on Optical Instruments and Technology, OIT 2009, October 19, 2009 - October 22, 2009, Shanghai, China 作者:  Liu Y.;  Liu H.;  Liu H.;  Liu H.;  Liu Y. 收藏  |  浏览/下载：36/0  |  提交时间：2013/03/25 We use finite difference time domain (FDFD) method as rigorous vector analysis model to simulate the focusing process of diffractive microlens (DML). Differing with most analysis model which the near field distributions are calculated by FDTD and then far field are obtained by using of propagation method  we obtain the fields in whole computational space by using of FDTD only. The advantages are that all the results are vector based and the computational time is saved greatly. In this paper  we present two methods to obtain wave amplitude  one is comparison method  and the other is integral method. Depending on wave amplitude in the whole computational space  one can conveniently obtain distributions of electric field intensity and calculate the time-average Poynting vector. We also present the formulation for calculating diffractive efficiency of DML based on time-average Poynting vector which denotes energy flow. As demonstration  a DML is analyzed by using of these algorithms. The time depended graphic results of FDTD show the process of wave propagation. The distribution of electric field intensity illustrates the focusing of the normal incident light. The focus pattern in the focal plane is also show. The diffractive efficiency of the DML is calculated by using of the energy flow method in this paper. The results show the high accuracy and efficiency of the model. 2009 SPIE.   Composite-structure frequency selective surface with tripole elements (EI CONFERENCE) 会议论文  OAI收割 8th International Symposium on Antennas, Propagation and EM Theory, ISAPE 2008, November 2, 2008 - November 5, 2008, Kunming, China 作者:  Gao J. 收藏  |  浏览/下载：80/0  |  提交时间：2013/03/25 Two composite symmetry structure is proposed in this paper. Based on the integral equation method  the frequency response with large incident angle effect is analyzed. As a result of the numerical analysis  it is shown that the composite symmetry structure with single FSS screen is efficient to stabilize the drift of FSS resonant frequency with the steering of incident angle though transmission loss increased. Especially the structure that the FSS is embedded centrally in the dielectrics has better frequency characteristic with flat top and sharp skirts. The studies have indicated the versatility of the proposed structure. 2008 IEEE.