中国科学院机构知识库网格系统: 检索

Enhancing Representation Power of Deep Neural Networks With Negligible Parameter Growth for Industrial Applications 期刊论文 OAI收割
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS, 2024, 页码: 12
作者: Chen, Liangming; Jin, Long; Shang, Mingsheng; Wang, Fei-Yue

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收藏 | 浏览/下载：26/0 | 提交时间：2024/05/30

Residual neural networks Vectors Noise Biological neural networks Medical services Defect detection Agriculture Deep neural networks (DNNs) industrial applications ordinary differential equation (ODE) representation power

A compact QCW conduction-cooled high power semiconductor laser array 会议论文 OAI收割
17th international conference on electronic packaging technology, icept 2016, wuhan, china, 2016-08-16
作者: Zhu, Qiwen; Zhang, Pu; Wang, Shuna; Wu, Dihai; Nie, Zhiqiang

收藏 | 浏览/下载：45/0 | 提交时间：2016/11/22

Chip scale packages Electronics packaging Finite element method High power lasers High temperature applications Temperature

Evaluation of the operating range for ground-based infrared imaging tracking system (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, May 24, 2011 - May 24, 2011, Beijing, China
作者: Zhang Z.-D.

收藏 | 浏览/下载：50/0 | 提交时间：2013/03/25

Ground-based infrared imaging tracking system (GIITS) is of great importance for aerial target warning and guard. The operating range is one of the key performance specifications on the other which should be calculated calculate the radiation power received on the detector in order to analysis whether the output signal meets the detection requirements or not analyzed and studied during the whole GIITS design process. The operating range is mostly influenced by a few factors without considering the effect of the background radiation. By improving of the traditional method including atmospheric attenuation a new operating range calculation model of the GIITS was established based on two requirements. One is that the image size of observed target should meet the requirement of the processor signal extraction. The number of the pixel occupied by target image should be more than 9. The other is that the signal noise ratio (SNR) of the GIITS should not be less than 5 to meet the requirements of the target detection probability and spatial frequency. The SNR calculation equation in form of energy is deduced and the radiation characteristic of the observed target and background are analyzed. When evaluate the operating range of the GIITS using the new method the performance of GIITS and feature of target and background. This paper firstly makes analysis and summarization on the definite localizations of the traditional operating range equation of the GIITS. The localizations are mainly in two aspects. On one hand we should successively calculate two operating range values according to two requirements mentioned above and choose the minimum value as the analytic result. In the end the dispersion of the image and the effect of image dispersion are not considered in the traditional method an evaluation of operating range for fighter aircraft is accomplished as an example. The influence factors in every aspect on operating range were explored by the calculated result. The new operating range calculation model provides the theoretical basis for the design and applications as well as the comprehensive evaluation of a GIITS. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).

Electron mobility in modulation-doped AlSb/InAs quantum wells 期刊论文 OAI收割
journal of applied physics, 2011, 卷号: 109, 期号: 7, 页码: article no.73703
作者: Zhang Y; Li YB

收藏 | 浏览/下载：64/5 | 提交时间：2011/07/05

ACOUSTIC-PHONON-SCATTERING LOW-POWER APPLICATIONS TRANSPORT-PROPERTIES INTERFACE ROUGHNESS INAS/ALSB HEMTS HETEROSTRUCTURES INAS TRANSISTORS GAS LAYERS

Experiments of second harmonic generation output in pulsed TEA CO 2 laser (EI CONFERENCE) 会议论文 OAI收割
High-Power Lasers and Applications V, October 18, 2010 - October 19, 2010, Beijing, China
作者: Li D.

收藏 | 浏览/下载：65/0 | 提交时间：2013/03/25

It is always the hot subject to realize the output of high-power laser in the range of 3-5m wavelength. This rang of wave band has greatly important applications in military because it located in the atmosphere window. Generally there are two ways to obtain this range of laser wavelength. One way is through optical parameter oscillation (OPO) from shorter laser wavelength and the other is through second harmonic generation (SHG) from longer laser wavelength. Firstly the comparison between tow nonlinear crystals ZnGeP2 and AgGaSe2 is conducted for their nonlinear coefficient and damaging threshold in theory. The theoretical results show that the crystal AgGaSe 2 is more suitable for the SHG of pulsed TEA CO2 laser. When using pulsed TEA CO2 laser with wavelength of 9.3m to pumping AgGaSe2 SHG crystal the wavelength of 4.65m is obtained. In the condition of repetition rate 100Hz the upmost output power of single pulse is up to level of 1W which corresponding efficiency of SHG is about 6%. The experimental results show that the polarization of laser beam has greatly influence on the SHG output of the crystal. Under the radiation of 3MW/cm 2 from fundamental wave and the right position for maximal SHG output in the crystal when polarization of laser beam rotates 4.5 the SHG output of energy decrease about 30%. The research of this paper will make a foundation for further development of mid-infrared laser. 2010 Copyright SPIE - The International Society for Optical Engineering.

Retransmission control for TDMA MAC in energy harvesting wireless sensor networks 会议论文 OAI收割
2010 International Conference on Computer Design and Applications, ICCDA 2010, Qinhuangdao,China, June 25-27, 2010
作者: Zhang HL(张华良); Zheng M(郑萌); Li JN(李金娜); Yu HB(于海斌); Zeng P(曾鹏)

收藏 | 浏览/下载：25/0 | 提交时间：2012/06/06

Computer applications Electric power transmission Harvesting Optimization Quality assurance Redundancy Sensor networks Time division multiple access Wireless sensor networks

Redundancy control for reliability-lifetime tradeoff in energy harvesting wireless sensor networks 会议论文 OAI收割
2010 International Conference on Computer Design and Applications, ICCDA 2010, Qinhuangdao, Hebei, China, June 25-27, 2010
作者: Zhang HL(张华良); Zheng M(郑萌); Li JN(李金娜); Yu HB(于海斌); Zeng P(曾鹏)

收藏 | 浏览/下载：29/0 | 提交时间：2012/06/06

Computer applications Electric power transmission Energy utilization Harvesting Quality assurance Redundancy Sensor networks Time division multiple access Wireless sensor networks

Self-consistent analysis of AlSb/InAs high electron mobility transistor structures 期刊论文 OAI收割
journal of applied physics, 2010, 卷号: 108, 期号: 4, 页码: art. no. 044504
Li YB (Li Yanbo); Zhang Y (Zhang Yang); Zeng YP (Zeng Yiping)

收藏 | 浏览/下载：239/46 | 提交时间：2010/10/11

INAS/ALSB QUANTUM-WELLS LOW-POWER APPLICATIONS HEMTS MODULATION HETEROSTRUCTURES TECHNOLOGY CHANNEL VOLTAGE MASS

Analysis of laser jamming to satellite-based detector (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, June 17, 2009 - June 19, 2009, Beijing, China
作者: Guo L.-H.; Guo R.-H.; Wang S.-W.

收藏 | 浏览/下载：34/0 | 提交时间：2013/03/25

The reconnaissance satellite communication satellite and navigation satellite used in the military applications have played more and more important role in the advanced technique wars and already become the significant support and aid system for military actions. With the development of all kinds of satellites anti-satellite laser weapons emerge as the times require. The experiments and analyses of laser disturbing CCD (charge coupled detector) in near ground have been studied by many research groups but their results are not suitable to the case that using laser disturbs the satellite-based detector. Because the distance between the satellite-based detector and the ground is very large it is difficult to damage it directly. However the optical receive system of satellite detector has large optical gain so laser disturbing satellite detector is possible. In order to determine its feasibility the theoretical analyses and experimental study are carried out in the paper. Firstly the influence factors of laser disturbing satellite detector are analyzed in detail which including laser power density on the surface of the detector after long distance transmission and laser power density threshold for disturbing etc. These factors are not only induced by the satellite orbit but dependence on the following parameters: laser average power in the ground laser beam quality tracing and aiming precision and atmospheric transmission. A calculation model is developed by considering all factors which then the power density entering into the detector can be calculated. Secondly the laser disturbing experiment is performed by using LD (laser diode) with the wavelength 808 nm disturbing CCD 5 kilometer away which the disturbing threshold value is obtained as 3.5510-4mW/cm2 that coincides with other researcher's results. Finally using the theoretical model the energy density of laser on the photosensitive surface of MSTI-3 satellite detector is estimated as about 100mW/cm2 which is largely exceed the disturbing threshold and therefore verify the feasibility of using this kind of laser disturbing the satellite-based detector. According to the results. using the similar laser power density absolutely saturate the requirements to laser disturbing satellite-based detector. If considering the peak power of pulsed laser even decrease laser average power it is also possible to damage the detector. This result will provide the reliable evidences to evaluate the effect of laser disturbing satellite-based detector. 2009 SPIE.

High power diode laser with beam coupling (EI CONFERENCE) 会议论文 OAI收割
Optoelectronic Materials and Devices III, October 27, 2008 - October 30, 2008, Hangzhou, China
作者: Wang L.; Liu Y.; Wang L.; Liu Y.; Liu Y.

收藏 | 浏览/下载：63/0 | 提交时间：2013/03/25

As the increasing applications of the semiconductor lasers in the laser processing the single 2-D stack optic-power density has not satisfied the actual requirements. It demands to couple several diode laser stack beams to one to improve the brightness and it becomes the central issue to adopt the appropriate beam coupling technology which would offer high quality and high efficiency. In this paper it mainly introduces the beam shaping and the technology of spatial coupling polarization coupling and wavelength coupling. The coupling key elements are presented and indicated. Finally the development of the diode laser on beam coupling in our country fell behind through analyzing the statement of the world. Our lab is studying on polarization coupling and wavelength coupling. We gain some results by phase which the polarization coupling efficiency can achieve 90% for two LD stacks with seven bars whose luminous wavelength is 975nm and980nm.By two 808nm diode laser coupling the efficiency of 60% can be achieved after focusing to the beam size of 22mm2. 2008 SPIE.