中国科学院机构知识库网格系统: 检索

Effectiveness of predicting spatial contaminant distributions at industrial sites using partitioned interpolation method 期刊论文 OAI收割
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH, 2020, 页码: 14
作者: Qiao, Pengwei; Yang, Sucai; Wei, Wenxia; Li, Peizhong; Cheng, Yanjun

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收藏 | 浏览/下载：31/0 | 提交时间：2021/03/18

Data partitioning Accuracy Improvement degree Effectiveness Industrial sites Soil pollution

Fiber optic distributed temperature sensing for fire source localization 期刊论文 OAI收割
MEASUREMENT SCIENCE AND TECHNOLOGY, 2017, 卷号: 28, 期号: 8
作者: Sun, Miao; Tang, Yuquan; Yang, Shuang; Sigrist, Markus W.; Li, Jun

收藏 | 浏览/下载：53/0 | 提交时间：2018/07/27

Fire Source Localization Distributed Temperature Sensing Prediction Accuracy Improvement

Spatial prediction of soil organic matter content integrating artificial neural network and ordinary kriging in Tibetan Plateau 期刊论文 OAI收割
ECOLOGICAL INDICATORS, 2014, 卷号: 45, 页码: 184-194
作者: Dai, Fuqiang; Zhou, Qigang; Lv, Zhiqiang; Wang, Xuemei; Liu, Gangcai

收藏 | 浏览/下载：23/0 | 提交时间：2015/06/23

Soil organic matter Digital soil mapping Artificial neural network Ordinary kriging Accuracy improvement

Error analysis of the micro temperature control system (EI CONFERENCE) 会议论文 OAI收割
2012 International Conference on Measurement, Instrumentation and Automation, ICMIA 2012, September 15, 2012 - September 16, 2012, Guangzhou, China
Han Z.; Song K.

收藏 | 浏览/下载：48/0 | 提交时间：2013/03/25

In order to improve the measurement accuracy of optical detection instruments temperature control circuits for narrow band-pass filters are given and the error analysis is applied to temperature control circuits.The principle of a temperature measurement circuit is studied and the method of a driver circuit is described. A variety of influencing factors of temperature control accuracy are discussed. Moreover for these error factors improvement measures are given to reduce the nonlinear error. Finally circuit parameter error is quantified to propose a calculation method for margin of error in a temperature control system. (2013) Trans Tech Publications Switzerland.

A line mapping based automatic registration algorithm of infrared and visible images 会议论文 OAI收割
5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Infrared Imaging and Applications, Beijing, June 25-27, 2013
作者: Ai R(艾锐); Shi ZL(史泽林); Xu DJ(徐德江); Zhang CS(张程硕)

收藏 | 浏览/下载：36/0 | 提交时间：2013/12/26

There exist complex gray mapping relationships among infrared and visible images because of the different imaging mechanisms. The difficulty of infrared and visible image registration is to find a reasonable similarity definition. In this paper, we develop a novel image similarity called implicit linesegment similarity(ILS) and a registration algorithm of infrared and visible images based on ILS. Essentially, the algorithm achieves image registration by aligning the corresponding line segment features in two images. First, we extract line segment features and record their coordinate positions in one of the images, and map these line segments into the second image based on the geometric transformation model. Then we iteratively maximize the degree of similarity between the line segment features and correspondence regions in the second image to obtain the model parameters. The advantage of doing this is no need directly measuring the gray similarity between the two images. We adopt a multi-resolution analysis method to calculate the model parameters from coarse to fine on Gaussian scale space. The geometric transformation parameters are finally obtained by the improved Powell algorithm. Comparative experiments demonstrate that the proposed algorithm can effectively achieve the automatic registration for infrared and visible images, and under considerable accuracy it makes a more significant improvement on computational efficiency and anti-noise ability than previously proposed algorithms.

Random vibration analysis on the support of strapdown inertial navigation system (EI CONFERENCE) 会议论文 OAI收割
2nd Annual Conference on Electrical and Control Engineering, ICECE 2011, September 16, 2011 - September 18, 2011, Yichang, China
作者: Li M.

收藏 | 浏览/下载：27/0 | 提交时间：2013/03/25

Vibration of the support is an important factor to the accuracy of strapdown inertial navigation. To get vibration characteristics of the support FEM model of the support was created with Ansys and then response characteristics were analyzed on the support under the separated random loads during carrier flight including the phases of subsonic and subsonic. To validate the analysis method wide band random vibration test was done on the points of the support which are used for mounting inertial instruments. The comparison of the analysis and the test data shows that the relative error of analysis result is not more than 13%. According to the two results the support structure was improved. Finally random vibration analysis was carried out on the improved one. The result shows that the acceleration response was largely reduced than before. This research can be a reference of performance improvement of the strapdown inertial support and navigation system precision. 2011 IEEE.

The error analysis of automated biochemical analyzer (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Computing, Information and Control, ICCIC 2011, September 17, 2011 - September 18, 2011, Wuhan, China
Qinghai C.; Yihui W.; Haiwen L.; Peng H.

收藏 | 浏览/下载：31/0 | 提交时间：2013/03/25

In order to find out the relationships between the four error sources namely locating error optics system fluctuations sampling error and temperature fluctuations and the accuracy of the instrument we analyzed each relationship of them and found that the effect of locating error is so tiny that it can be ignored finally established the total error model and the model of the allowed noise of the optics system of the instrument. Analysis and the models may supply a reliable theory evidence for the improvement of the instrument and the designing of similar instruments. 2011 Springer-Verlag.

Improving the accuracy of image-based forest fire recognition and spatial positioning 期刊论文 iSwitch采集
Science china-technological sciences, 2010, 卷号: 53, 页码: 184-190
作者: Jiang LiLi; Qi QingWen; Zhang An; Guo ChaoHui; Cheng Xi

收藏 | 浏览/下载：27/0 | 提交时间：2019/05/10

Forest fire monitoring Spatial positioning Accuracy improvement

Improving the accuracy of image-based forest fire recognition and spatial positioning SCI/SSCI论文 OAI收割
2010
作者: Zhang A.

收藏 | 浏览/下载：23/0 | 提交时间：2012/06/08

forest fire monitoring spatial positioning accuracy improvement

Non-contact and on-line cone diameter measuring based on high speed linear CCD (EI CONFERENCE) 会议论文 OAI收割
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 2, 2005 - November 5, 2005, Zian, China
Guohui Z.; Jianhua W.

收藏 | 浏览/下载：34/0 | 提交时间：2013/03/25

The remarkable improvement of sensing and processing hardware performance makes the non-contact on-line high accuracy and high speed measuring possible by means of linear CCD. The goal of this pager is to describe the key questions on designing the cone diameter detecting system by linear CCD. This paper first describes the detecting scheme. In particular the factors affecting accuracy such as resolution voltage difference between neighbor pixels detecting rate and so on are analyzed and the quantitative estimation equations are provided. CCD takes on the photoelectric translation and measuring component double functions so the waveform of CCD output signal and the affecting factors merit deep discussion. On the basis of discussion several principles that can be used to improve the boundary recognition accuracy are presented.