搜索结果: 16-30 共查到“知识库 光谱技术”相关记录1528条 . 查询时间(1.703 秒)
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LAMOST简报-2022年第4期
LAMOST DR9数据集 分辨率光谱巡天 数据产品精度
2023/5/11
驰骋星河整十载,领跑光谱天文路。在LAMOST运行和发展中心及相关单位的共同努力下,2022年3月31日,包含先导巡天及正式巡天前九年的LAMOST DR9数据集(v1.0版本)正式对国内天文学家和国际合作者发布。2021年6月,LAMOST第九年光谱巡天圆满结束,这也是LAMOST开展中分辨率光谱巡天的第三年。历时九个月,中心数据处理部对LAMOST DR9数据集的产品进行了处理分析,数据产品精...
LAMOST简报-2021年第9期
LAMOST DR7光谱数据 巡天观测 光谱巡天 DR7数据集 恒星参数星表
2023/5/11
LAMOST DR7光谱数据获得于2011年10月至2019年6月共八年的巡天观测。2018年10月5日,LAMOST二期中分辨率光谱巡天正式启动,因此,对外发布的DR7数据集(v2.0版本)中包括常规低分辨率光谱数据和中分辨率光谱数据两部分。DR7数据集(v2.0版本)共包括4922个低分辨率观测天区,679个中分辨率观测天区。发布光谱总数达到1423万条,其中低分辨率光谱1043万,中分辨率非...
LAMOST简报-2021年第6期
光谱巡天 天体光谱 光谱获取率 LAMOST
2023/5/11
巡天遥看整十载,千万光谱放异彩。截止2021年6月,LAMOST走过了十年的光谱巡天之路,累计获取天体光谱数达到2000万,成为全球最大最完备的天体光谱数据库。十年来,LAMOST保持了光谱获取率世界第一及发布光谱数据量世界第一的领先地位,千万光谱数据助力中国天文学家在银河系、恒星物理等前沿领域的研究进展引领世界。然而,LAMOST在稳定运行和成果爆发式增长的同时,也面临着十分严峻的挑战。
LAMOST简报-2021年第3期
LAMOST DR8数据集 光谱巡天 数据产品精度
2023/5/12
在LAMOST运行和发展中心及相关单位的共同努力下,2021年3月31日,包含先导巡天及正式巡天前八年的LAMOST DR8数据集(v1.0版本)正式对国内天文学家和国际合作者发布。2020年6月,LAMOST第八年光谱巡天圆满结束,这也是LAMOST开展中分辨率光谱巡天的第二年。历时九个月,中心数据处理部利用2020年升级后的新数据处理系统完成了LAMOST DR8数据集的处理及质量分析工作,数...
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中国科学院长春光学精密机械与物理研究所研制的FY-3E太阳辐照度光谱仪获得国内首次空间太阳全能谱高光谱辐照度信息(图)
FY-3E太阳辐照度光谱仪 太阳全能谱高光谱 太阳夫朗和费谱线
2022/4/22
A PRELIMINARY INVESTIGATION ON COMPARISON AND TRANSFORMATION OF SENTINEL-2 MSI AND LANDSAT 8 OLI
Sentinel-2 Landsat Spectral response function (SRF) Cross-calibration Transformation Consistency Uncertainty
2018/5/17
A PRELIMINARY INVESTIGATION ON COMPARISON AND TRANSFORMATION OF SENTINEL-2 MSI AND LANDSAT 8 OLI Timely and accurate earth observation with short revisit interval is usually necessary, especially for ...
A HYPERSPECTRAL BASED METHOD TO DETECT CANNABIS PLANTATION IN INACCESSIBLE AREAS
EO-1 Hyperion Hyperspectral data preprocessing Cannabis Morocco Spectral Angle Mapper (SAM)
2018/5/14
The increase in drug use worldwide has led to sophisticated illegal planting methods. Most countries depend on helicopters, and local knowledge to identify such illegal plantations. However, remote se...
STITCHING TYPE LARGE APERTURE DEPOLARIZER FOR GAS MONITORING IMAGING SPECTROMETER
Polarization Depolarizer Muller matrix Imaging Spectrometer Stitching Numerical Analysis
2018/5/15
To increase the accuracy of radiation measurement for gas monitoring imaging spectrometer, it is necessary to achieve high levels of depolarization of the incoming beam. The preferred method in space ...
OIL SPILL AISA+ HYPERSPECTRAL DATA DETECTION BASED ON DIFFERENT SEA SURFACE GLINT SUPPRESSION METHODS
Oil Spill Detection Hyperspectral Data Glint Suppression Wavelet Transform Enhanced Lee Filter
2018/5/16
The marine oil spill is a sudden event, and the airborne hyperspectral means to detect the oil spill is an important part of the rapid response. Sun glint, the specular reflection of sun light from wa...
A BAND SELECTION METHOD FOR HIGH PRECISION REGISTRATION OF HYPERSPECTRAL IMAGE
Hyperspectral Image High Spatial Resolution Image Registration CRLB Theory Band Selection Algorithm
2018/5/16
During the registration of hyperspectral images and high spatial resolution images, too much bands in a hyperspectral image make it difficult to select bands with good registration performance. Terrib...
WATER MAPPING USING MULTISPECTRAL AIRBORNE LIDAR DATA
Land Cover Classification Multispectral LiDAR Optech Titan Point Cloud Processing SLIER
2018/5/16
This study investigates the use of the world’s first multispectral airborne LiDAR sensor, Optech Titan, manufactured by Teledyne Optech to serve the purpose of automatic land-water classification with...
PURIFICATION OF TRAINING SAMPLES BASED ON SPECTRAL FEATURE AND SUPERPIXEL SEGMENTATION
Beijing-2 Satellite imagery Training Samples Purification Spectral Feature Superpixel Segmentation
2018/5/14
Remote sensing image classification is an effective way to extract information from large volumes of high-spatial resolution remote sensing images. Generally, supervised image classification relies on...
CLASSIFICATION AND RECOGNITION OF TOMB INFORMATION IN HYPERSPECTRAL IMAGE
Hyperspectral imaging technology PCA, Feature bands selection SVM Identification of matter
2018/5/14
There are a large number of materials with important historical information in ancient tombs. However, in many cases, these substances could become obscure and indistinguishable by human naked eye or ...
AUTOMATIC REGISTRATION OF GF4 PMS: A HIGH RESOLUTION MULTI-SPECTRAL SENSOR ON BOARD A SATELLITE ON GEOSTATIONARY ORBIT
GF4 PMS Automatic Image Registration Optimal Base Band RPC Correction Spatial Resolution
2018/5/14
Geometric correction is an important preprocessing process in the application of GF4 PMS image. The method of geometric correction that is based on the manual selection of geometric control points is ...