中国科学院机构知识库网格系统: 检索

Research Progress on the Corrosive Environment Large-Scale Evolution for Nuclear Waste Container 期刊论文 OAI收割
FRONTIERS IN MATERIALS, 2022, 卷号: 9, 页码: 10
作者: Zhang, Qichao; Jiang, Yishan; Zhao, Xin; Chen, Juna; Xia, Dahai

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收藏 | 浏览/下载：26/0 | 提交时间：2022/11/11

metal corrosion nuclear waste environment evolution radiation buffer material

Design and Realization of China Tianwen-1 Energetic Particle Analyzer 期刊论文 OAI收割
SPACE SCIENCE REVIEWS, 2021, 卷号: 217, 期号: 2, 页码: 20
作者: Li, Cunhui; Tang, Shuwen; Hu, Xiangyu; Qian, Yi; Wang, Yi

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收藏 | 浏览/下载：54/0 | 提交时间：2021/10/09

Martian radiation environment Mars Energetic Particle Analyzer (Mars-EPA) Solid-state telescope Compact energetic detector

Design and Realization of China Tianwen-1 Energetic Particle Analyzer 期刊论文 OAI收割
SPACE SCIENCE REVIEWS, 2021, 卷号: 217, 期号: 2, 页码: 20
作者: Li, Cunhui; Tang, Shuwen; Hu, Xiangyu; Qian, Yi; Wang, Yi

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收藏 | 浏览/下载：32/0 | 提交时间：2021/12/10

Martian radiation environment Mars Energetic Particle Analyzer (Mars-EPA) Solid-state telescope Compact energetic detector

Assessing the spatiotemporal variation in anthropogenic heat and its impact on the surface thermal environment over global land areas 期刊论文 OAI收割
SUSTAINABLE CITIES AND SOCIETY, 2020, 卷号: 63, 页码: 11
作者: Jin, Kai; Wang, Fei; Wang, Shaoxia

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收藏 | 浏览/下载：33/0 | 提交时间：2021/03/16

Anthropogenic heat Land surface thermal environment Solar radiation Temperature City

Video in Radiation Environments Denoise Using Wavelet and Kalman Filter 会议论文 OAI收割
Chengdu, Sichuan Province, China, December 13, 2019 - December 15, 2019
作者: Zhang, Zhizi; Cheng, Yong; Zhao, Jianping

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收藏 | 浏览/下载：19/0 | 提交时间：2021/05/06

Video denoise Radiation environment Wavelet Kalman filter

Retrieval of snow depth in Northeast China using FY-3B/MWRI passive microwave remote sensing data (EI CONFERENCE) 会议论文 OAI收割
Satellite Data Compression, Communications, and Processing VIII, August 12, 2012 - August 13, 2012, San Diego, CA, United states
Ren R.; Gu L.; Chen H.; Cao J.

收藏 | 浏览/下载：138/0 | 提交时间：2013/03/25

Comparing with optical remote sensing techniques passive remote sensing data have been proved to be effective for observing snowpack parameters such as snow depth and snow water equivalent which can penetrate snowpack without clouds interferences. The Microwave Radiation Imager (MWRI) loaded on the Chinese FengYun-3B (FY-3B) satellite is gradually used in the global environment research through November 2011. In this paper we proposed a snow depth retrieval algorithm to estimate snow depth in Northeast China using MWRI passive microwave remote sensing data. A decision tree method of snow identification was firstly designed to distinguish different snow cover conditions in order to eliminate other interference signals. After using the proposed decision tree method the processing results were further used to retrieve the snow depth in Northeast China. Finally the practical snow depth data and the MODIS data were collected for the accuracy assessment of the proposed snow depth retrieval method. The experimental results demonstrated that the RMSE of snow depth used the proposed method was approximately 3 cm in Northeast China. 2012 SPIE.

Bootstrap loader design of aerospace payload controller based on TSC695F (EI CONFERENCE) 会议论文 OAI收割
2010 2nd International Conference on Computational Intelligence and Natural Computing, CINC 2010, September 13, 2010 - September 14, 2010, Wuhan, China
Xu W.; Piao Y.

收藏 | 浏览/下载：37/0 | 提交时间：2013/03/25

Anti-radiation TSC695F is usually used as aerospace payload controller in tasks to ensure the aerospace payload having extremely high reliability in abominable space environment. The processor bases on SP ARC V7 architecture with parity check and EDAC so it could design out high reliable bootstrap loader to guarantee the operation system of VxWorks and application codes loaded correctly and worked stable and high effective. First this paper put forward the system hardware composition and boot mode which apply for aerospace payload then it makes clear the related contents of register group initialization stack initialization system hardware initialization in bootstrap loader of TSC695F and give out the method to establish TRAP table. That's all through comparing different type of organize mode of program image. After that compiling of target codes have been described and the kernel code of MakeFile had been given at the same time for reference aimed at the realization of engineering. Although this paper is based on TSC695F but it could be extended to other embedded system based on SP ARC for bootstrap loader analysis and design for example the TSC697 which based on SP ARC V8 with higher performance so this paper has extremely high engineering value. 2010 IEEE.

The calibration of faint simulation star magnitude based on single photon count technique (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications, June 17, 2009 - June 19, 2009, Beijing, China
作者: Xu S.-Y.; Guo J.; Guo J.

收藏 | 浏览/下载：33/0 | 提交时间：2013/03/25

A calibration method of faint star magnitude of the star scene simulation device is proposed in this paper. In the research of simulation star magnitude luminometers and CCD devices are the general calibration devices which are used to measure the illumination intensity and calibrate its magnitude. But if the simulation magnitude is only sixth magnitude its illumination intensity is only 1.010-8 Lux. This illumination intensity level is the lowest illumination intensity that the commercial luminometer can detect. Hence the simulation star magnitude lower than six magnitude cannot be calibrated by luminoters. Likewise CCD devices also need an additive cooler in this case. When the single photon characteristic is presented due to the low luminosity of simulating light sources the simulation star magnitude can be calibrated by detecting its photon flux of radiation with the method of single photon count. In this paper the detection principle of single photon based on a compact designed PMT detecting of the radiation level of simulation star magnitude is advanced. Especially a spectrum match method is proved theoretically to be an effective means for selecting PMT photosensitive type. In the case of the detection object of the simulation star in visible wavelength a analysis indicates that the material of tri-alkali cathode materials its best choice after being compared the Signal-to-Noise of photon detector of several PMT photosensitive materials based on the different spectrum match ratio of different object light sources and different cathode materials. An experiment is employed to show the relationship of control voltage of PMT and its dark counter the relationship of the environment temperature of PMT and its dark counter which proves its only decades of CPS at room temperature. The so low dark counter avoids a bulky cooler and is convenient for installing it on the star scene simulation equipment. Finally in the experiment of calibrating the simulation star magnitudes the ability of its calibration is confirmed to reaches up to 12m meanwhile its calibration error is within 0.2m. 2009 SPIE.

A method of outdoor simulation of infrared radiance of targets (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Infrared Imaging and Applications, June 17, 2009 - June 19, 2009, Beijing, China
Song J.-T.; Shen X.-H.; Zhao Y.-J.

收藏 | 浏览/下载：34/0 | 提交时间：2013/03/25

Current research on infrared simulation often focuses mainly on infrared imaging simulation by computer and pays little attention to outdoor simulation of infrared radiation characteristics of targets. In order to simulate infrared radiance of targets outdoors in this paper we propose a new outdoor simulation method on the basis of heating the cloth by electricity. There are two major contributions in the paper. Firstly uneven distributing of temperature field of the cloth surface is considered and the long-wave thermal imager is used as a link of the temperature control system. On the basis of many experiments the expression is concluded about the relation of the temperature obtained by the lone-wave thermal imager and the temperature obtained by the temperature control system and the environmental temperature at the experimental scene. Secondly the influence of the environment at the experimental scene on the infrared radiance of the cloth surface is thought over. Thanks to two measures above simulation precision of infrared radiance is made much better. The results of many outdoor experiments demonstrate the performance of the proposed approach. 2009 SPIE.

A polysilazane coating protecting polyimide from atomic oxygen and vacuum ultraviolet radiation erosion 期刊论文 OAI收割
Surface & Coatings Technology, 2009, 卷号: 203, 期号: 22, 页码: 3338-3343
L. F. Hu; M. S. Li; C. H. Xu; Y. M. Luo; Y. C. Zhou

收藏 | 浏览/下载：26/0 | 提交时间：2012/04/13

Polysilazane Low earth orbit Atomic oxygen Vacuum ultraviolet radiation low-earth-orbit high-flux source polymers environment spectroscopy plasma beam