中国科学院机构知识库网格系统: 检索

Air Temperature Estimation with MODIS Data over the Northern Tibetan Plateau 期刊论文 OAI收割
ADVANCES IN ATMOSPHERIC SCIENCES, 2017, 卷号: 34, 期号: 5, 页码: 650-662
作者: Huang, FF (Huang, Fangfang); Ma, WQ (Ma, Weiqiang); Wang, BB (Wang, Binbin); Hu, ZY (Hu, Zeyong); Ma, YM (Ma, Yaoming)

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收藏 | 浏览/下载：39/0 | 提交时间：2018/07/12

LAND-SURFACE TEMPERATURES DAILY MAXIMUM RESOLUTION MINIMUM FLUXES AREAS SEBS

Evaluation of spatial upscaling methods based on remote sensing data with multiple spatial resolutions (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.; Cao J.; Chen H.; Sun J.

收藏 | 浏览/下载：36/0 | 提交时间：2013/03/25

In most applications of remote sensing data special spatial information is required from a finer to a coarser spatial resolution with appropriate upscaling methods. The purpose of this paper is to compare and evaluate current spatial upscaling methods using MODIS remote sensing data with multiple spatial resolutions. In the research Northeast China was selected as the study area. MODIS data with spatial resolutions of 250 m (2 bands) and 500 m (7 bands) were used as the test data. Through using the selected upscaling methods the Band 1 and Band 2 data of MODIS were scaled up from 250 m to 500 m spatial resolution. On the basis of land cover characteristics of Northeast China the MODIS data located in the study area was classified into the five land cover types including water grasslands forests farmlands and bare lands using maximum likelihood method. The land cover classification results were further compared with MODIS Land Cover Type product. Finally Structural Similarity (SSIM) was selected to evaluate the effects of these upscaling methods. The research can provide more useful information for spatial scaling transformation in remote sensing data applications. 2012 SPIE.

Research on the extraction of wetlands water based on unmixing mixed-pixel methods - A case study in Qinghai 会议论文 OAI收割
2011 International Conference on Remote Sensing, Environment and Transportation Engineering, RSETE 2011, Nanjing, China, June 24, 2011 - June 26,2011
Li, Nana; Niu, Zhenguo

收藏 | 浏览/下载：34/0 | 提交时间：2014/12/07

Solvent extraction Civil engineering Image resolution Lakes Maximum likelihood Pixels Radiometers Remote sensing Research Satellite imagery Wetlands

Design of driving circuit for binocular CCD image system (EI CONFERENCE) 会议论文 OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology, April 26, 2010 - April 29, 2010, Dalian, China
作者:

收藏 | 浏览/下载：49/0 | 提交时间：2013/03/25

The paper designs a driving circuit of high sensitive wide dynamic and high signal-to-noise ratio for binocular CCD imaging system which adopts a Dalsa-made high resolution full-frame 33-mega pixels area CCD FTF5066M. Inner structure and driving timing of the FTF5066M sensor are presented. Field Programmable Gate Array (FPGA) is used as the main device to accomplish the timing design of the circuits and power driver control of the two sensors. By using the Correlated Double Sampling (CDS) technique the video noise is reduced and the SNR of the system is increased. A 12- bit A/D converter is used to improve the image quality. The output rate of the imaging system designed with integrated chip can reach to 1.3 frames per second through bi-channel. For its good performance low power consumption and small volume the driving system can be applied to aeronautics and astronautics field. With a further improvement a maximum data output rate of 2.7 frames per second can be reached through all the eight channels of the two CCDs. 2010 Copyright SPIE - The International Society for Optical Engineering.

The system of 24-channel digital potentiometers based on single-chip microcomputer (EI CONFERENCE) 会议论文 OAI收割
2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China
Song X.-R.; Liu Z.-G.; Wu Z.-Y.; Yu A.-F.

收藏 | 浏览/下载：40/0 | 提交时间：2013/03/25

This paper introduces that using digital potentiometers output 24-channel resistance to simulate the thermistors. Every channel has two digital potentiometers one is low resolution and high value the other is high resolution and low value. They are connected through Daisy-Chain and share chip-select. 24-channel digital potentiometers share the SPI's clock and SDI. Input the parameter in the computer and then send it to the single-chip microcomputer. The single-chip microcomputer receives the parameter and sends it to the digital potentiometers. After correcting the errors the system meets the demands which are resistance range of 040K and maximum error of 15. The design can replace the traditional way in which the mechanical potentiometers are used to simulate the thermistors. 2010 IEEE.

Design and implementation of a high speed CMOS imaging system (EI CONFERENCE) 会议论文 OAI收割
2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China
作者: He X.

收藏 | 浏览/下载：32/0 | 提交时间：2013/03/25

In order to meet the needs of measurement of highspeed target the timing sequence of LUPA300 an array CMOS image sensor of CYPRESS is analyzed. The driving timing and control software is designed for the array CMOS sensor. High speed CMOS imaging system whose hardware platform is FPGA is emphasized. Real-time non-uniformity correction for CMOS sensor is implemented in the output stage. The experimental result shows that the system could control the CMOS sensor flexibly. The image is clear and stable. The maximum resolution of the image is 640H480V pixels and the system can operate up to 250 frames per second in full resolution. 2010 IEEE.

Improvement of urban land use and land cover classification approach in arid areas 会议论文 OAI收割
Proceedings of SPIE - The International Society for Optical Engineering, Image and Signal Processing for Remote Sensing XVI, Toulouse, France, 2010
Qian; Jing1; 2; Zhou; Qiming1; Chen; Xi2

收藏 | 浏览/下载：40/0 | 提交时间：2011/08/23

Arid regions - Image analysis - Image classification - Land use - Landforms - Maximum likelihood - Photography - Pixels - Remote sensing - Signal processing - Aerial Photographs - Arid area - Bare soils - Beijing-1 - Built-up areas - Classification approach - Classification results - Construction materials - Data sets - Discrete elements - Extraction accuracy - Field investigation - High resolution image - Land-cover types - Landsat ETM - Maximum likelihood classifications - Mixed pixel - Multi-sensor data - Object oriented - object-oriented classification method - Object-oriented processing - Spectral characteristics - Stony deserts - Urban areas - Urban change detection - Urban environments - Urban land use

A note on the single genotype resolution problem 期刊论文 OAI收割
JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY, 2004, 卷号: 19, 期号: 2, 页码: 254-COVER3
作者: Lin, H; Zhang, ZF; Zhang, QF; Bu, DB; Li, M

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收藏 | 浏览/下载：21/0 | 提交时间：2019/12/16

haplotype inference single genotype resolution maximum resolution NP-completeness

SAD phasing by combination of direct methods with the SOLVE/RESOLVE procedure 期刊论文 OAI收割
ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY, 2004, 卷号: 60, 页码: 1244
Wang, JW; Chen, JR; Gu, YX; Zheng, CD; Jiang, F; Fan, HF; Terwilliger, TC; Hao, Q

收藏 | 浏览/下载：25/0 | 提交时间：2013/09/24

ANOMALOUS-SCATTERING DATA COMBINING DIRECT METHODS STATISTICAL DENSITY MODIFICATION PROTEIN CRYSTAL-STRUCTURES ISOMORPHOUS REPLACEMENT S-ATOMS ENTROPY MAXIMIZATION MAXIMUM-ENTROPY SULFUR RESOLUTION

An image processing approach to crystal structure determination 期刊论文 OAI收割
MATERIALS CHEMISTRY AND PHYSICS, 1997, 卷号: 47, 期号: 2-3, 页码: 118
Li, FH

收藏 | 浏览/下载：32/0 | 提交时间：2013/09/17

RESOLUTION ELECTRON-MICROSCOPY ENTROPY MAXIMIZATION MODULATED STRUCTURES MAXIMUM-ENTROPY DIFFRACTION DECONVOLUTION MICROGRAPH SUPERSPACE