机构

• 地质与地球物理研究所 [2]
• 计算技术研究所 [1]
• 长春光学精密机械与物... [1]
• 半导体研究所 [1]

采集方式

• OAI收割 [5]

内容类型

• 期刊论文 [3]
• 会议论文 [2]

发表日期

• 2022 [1]
• 2009 [3]
• 2002 [1]

学科主题

• 光电子学 [1]

筛选

浏览/检索结果: 共5条，第1-5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 Design of Power-Imbalanced SCMA Codebook 期刊论文  OAI收割 IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 2022, 卷号: 71, 期号: 2, 页码: 2140-2145 作者:  Li, Xudong;  Gao, Zhicheng;  Gui, Yiming;  Liu, Zilong;  Xiao, Pei   |  收藏  |  浏览/下载：38/0  |  提交时间：2022/12/07 NOMA  Genetic algorithms  Electronic mail  Downlink  Sparse matrices  Codes  Receivers  Sparse code multiple access (SCMA)  power imbalance  near-far effect  minimum Euclidean distance (MED)  minimum product distance (MPD)   Method for obtaining real temperature of space object by using the ratio of emissivity at different wavelengths (EI CONFERENCE) 会议论文  OAI收割 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 19, 2008 - November 21, 2008, Chengdu, China Guo-Qiang W.; Tao C.; Jian-Li W. 收藏  |  浏览/下载：33/0  |  提交时间：2013/03/25 The infrared radiation character (temperature and efficiency radiation area) of a space object is an important characteristic  we can judge the state of the object working in orbit by measuring temperature and variety. Due to lower temperature of the object and far distance between the object and the earth  the infrared radiation signal is faintness  therefore temperature and the infrared radiation character is difficult to measure. There are several methods to measure the temperature of the object in theory and each one has its applicability respectively  such as applying Wien Law to compute temperature  based on Stefan-Bolzmann law to compute temperature and utilizing multi-spectrum detector to measure temperature As a whole these methods are based on the hypothesis that the object is a Black-body or the radiance emissivity is constant. In fact  homochromatic radiance of object is not a constant but a function that changes with wavelength. Since the problem that an object whose homochromatic radiance s not a constant which results in temperature can not be computed accurately  we bring forward a method to contrast the luminance of the object at different wavelengths and deduce the relationship among homochromatic radiance and wavelength and the temperature of Black-body  from which we can compute real temperature of object. 2009 SPIE.   Frequency response characteristics of target electric property with long bipole large power control source 期刊论文  OAI收割 CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2009, 卷号: 52, 期号: 1, 页码: 275-280 作者:  Di Qing-Yun;  Wang Guang-Jie;  Wang Miao-Yue;  Wang Ruo   |  收藏  |  浏览/下载：19/0  |  提交时间：2018/09/26 Long bipole  Large power  Far distance  Rock property  Resistivity-frequency response   Frequency response characteristics of target electric property with long bipole large power control source 期刊论文  OAI收割 CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2009, 卷号: 52, 期号: 1, 页码: 275-280 作者:  Di Qing-Yun;  Wang Guang-Jie;  Wang Miao-Yue;  Wang Ruo   |  收藏  |  浏览/下载：15/0  |  提交时间：2018/09/26 Long bipole  Large power  Far distance  Rock property  Resistivity-frequency response   Real-time far distance micro-vibration measurement using an external cavity semiconductor laser interferometer with a feedback control system 会议论文  OAI收割 conference on optical design and testing, shanghai, peoples r china, oct 15-18, 2002 Zhao WR; Jiang PF; Xie FZ 收藏  |  浏览/下载：34/7  |  提交时间：2010/10/29 external cavity semiconductor laser interferometer  far distance  micro-vibration measurement  feedback control  DISPLACEMENT MEASUREMENT  DIODE INTERFEROMETER  PHASE