中国科学院机构知识库网格系统: 检索

Orbit improvement for Chang'E-5T lunar returning probe with GNSS technique 期刊论文 OAI收割
ADVANCES IN SPACE RESEARCH, 2015, 卷号: 56, 期号: 11, 页码: 2473-2482
作者: Fan, Min; Hu, XiaoGong; Dong, Guangliang; Huang, Yong; Cao, Jianfeng

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Chinese lunar exploration program Global navigation satellite system Weak signal acquisition and tracking performance Fusion processing of space- and ground-based data Accuracy of orbit determination and prediction

Comparison of gross primary productivity derived from GIMMS NDVI3g, GIMMS, and MODIS in Southeast Asia EI期刊论文 OAI收割
2014
作者: Liu Jiyuan; Huang Mei; Wang Junbang

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Ecosystems Carbon dioxide Data processing Deforestation Estimation Radiometers Satellite imagery

Estimation of gross primary production over the terrestrial ecosystems in China EI期刊论文 OAI收割
2013
作者: Yu Guirui

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Ecosystems Carbon dioxide Climate change Climate models Data processing Estimation Forestry Radiometers Satellite imagery Vegetation

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.

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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.

A new cloud detection algorithm for HJ-1B images 会议论文 OAI收割
2nd World Congress on Computer Science and Information Engineering, CSIE 2011,, Changchun, China, June 17, 2011 - June 19,2011
Han, Jie; Liu, Li; Yang, Leiku; Xie, Yujuan; Yu, Tao; Sun, Yuan

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Pixels Computer science Data processing Image reconstruction Satellite imagery

Research and software implementation of CCSDS lossless data compression algorithm 会议论文 OAI收割
2012 11th International Conference on Signal Processing, ICSP 2012,, Beijing, China, October 21, 2012 - October 25,2012
Chu, Qing-Wei; Zhang, Hong-Qun; Wu, Ye-Wei

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Software testing Algorithms Data compression Satellite ground stations Signal processing

Design and calibration of the solar irradiance monitor (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China
作者: Yang D.-J.; Gong C.-H.; Wang Y.-P.; Ye X.; Fang W.

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The solar irradiance monitor (SIM) with the design accuracy of 5 used to monitor the secular changes of the total solar irradiance on FY-3 satellite takes the sun-scanning measurement method on-orbit. Compared to the sun-tracking measurement method this method simplifies the structure and cuts the cost but the measuring accuracy is affected by the sun-synchronous orbit sunlight incidence angle and the installing angle of the SIM in the satellite. Through the ground calibration experiment studies on the affection of different sunlight incidence angles to the measurement accuracy. First by the satellite tool kit (STK) simulation software simulates the orbital parameters of the sun-synchronous satellite and calculates the Sun ascension and declination at any time. By the orbit coordinate transformation matrix gets the components of the Sun vectors to the axes of the satellite and base on the components designs the field of view and the installing angles of the SIM. Then designs and completes the calibration experiment to calibrate the affection of the incidence angles. Selecting 11 different angles between the sunlight and the satellite X-axis measures the total solar irradiance by the SIM at each angle and compares to the irradiances of the SIAR reference radiometers and gets the coefficient curves of the three channels of the SIM. Finally by the quadratic fitting gets the correction equations on the incidence angles: R 1=5.7110-52 -2.45310 -3+1.0302 R2=2.8410-5-1. 96510-3+1.0314 and R3 =1.7210 -52-4.18410-4+0.9946. The equations will aimprove the on-orbit measurement accuracy of the solar irradiance and are very important to the on-orbit data processing after the satellite launched. 2011 SPIE.

Technology research of the ground real-time data processing for long range image and information broadcast of remote sensing satellite 会议论文 OAI收割
2010 2nd IITA Conference on Geoscience and Remote Sensing, IITA-GRS 2010,, Qingdao, China, August 28, 2010 - August 31,2010
Li, Liang; Chen, Fu; Liu, Jianbo

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Data processing Broadcasting Communication satellites Geology Industrial research Military satellites Pipeline processing systems Pipelines Remote sensing Satellite communication systems Software architecture Technology

Estimating forest biomass with GLAS samples and MODIS imagery in Northeastern China 会议论文 OAI收割
MIPPR 2009 - Remote Sensing and GIS Data Processing and Other Applications: 6th International Symposium on Multispectral Image Processing and Pattern Recognition, Yichang, China, October 30, 2009 - November 1,2009
Fu, Anmin; Sun, Guoqing; Guo, Zhifeng

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Satellite imagery Agriculture Aneroid altimeters Atmospherics Biomass Biometrics Data processing Deforestation Ecosystems Geographic information systems Image processing Infrared devices Optical radar Radio altimeters Radiometers Reforestation Regression analysis Remote sensing Satellite ground stations Spectrometers Three dimensional Timber Vegetation

A SWS-based remote sensing information and knowledge sharing system 会议论文 OAI收割
2008 Proceedings of Information Technology and Environmental System Sciences: Itess 2008, Vol 1, Beijing
Wang, Cl; Li, Cr

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Semantic Web Services satellite data processing information and knowledge sharing