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Multidisciplinary Approach for a Basement Aquifer Location in Tanda Region, C&ocirc;te d’Ivoire 预览
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作者 Adama Coulibaly Omer Zéphir de Lasme +3 位作者 Ta Marc Youan Gbombélé Soro Théophile Lasm Nagnin Soro 《水资源与保护(英文)》 2019年第9期1111-1128,共18页
The lack of knowledge about fracture systems in Tanda region has led to an approximative establishment of drilling and so a difficult access to groundwater. Thus, a multidisciplinary approach including satellite image... The lack of knowledge about fracture systems in Tanda region has led to an approximative establishment of drilling and so a difficult access to groundwater. Thus, a multidisciplinary approach including satellite imagery and electrical resistivity method was conducted with the main objective to locate productive fractures of water in the study area. Indeed, 195-54, 195-55, 196-54, and 196-55 scenes of Landsat 7 ETM+ satellite images were used. Also, sixty-two (62) vertical electrical soundings (VES) of the Schlumberger configuration and hundred twenty-nine (129) electrical trailing (ET) were performed with a resistivity-meter SYSCAL Pro. Thanks to different treatments applied to satellite images, structural lineaments have been extracted whose main directions are N00-10 (N-S), N90-100 (E-W), N70-80 and N100-110. The interpretation of electrical trailing data made it possible to validate the lineament map by the determination of the fracturing directions. Those are NW-SE, N-S, NE-SW and to some extent E-W. The result of the electrical sounding data showed the presence of three geoelectric layers comprising firstly cuirass and lateritic clays and possibly topsoil, secondly sands and/or clay sandstone and firdly either granites or sandstones or schists. The second geoelectrical layer corresponds to the potential aquifer because of its relatively low electrical resistivity values (13 Ω·m to 180 or 240 Ω·m). In addition, drillings established at the right of these geological structures provided an average water yield of 4.22 m3·h-1, sufficient for rural hydraulic. Moreover, these results made it possible to obtain a correlation between drilling productivity and the major directions of fracturing. This indicates that the most productive directions are in order of importance NE-SW, NW-SE, E-W and finally N-S. They also correspond to the major fracturing directions of Tanda region. These results are encouraging and contribute to a better implementation of future drilling in this region. 展开更多
关键词 MULTIDISCIPLINARY Satellite Images Resistivity Method ELECTRICAL SOUNDINGS ELECTRICAL Trailing Aquifers FRACTURES
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卫星影像在省级基础测绘中的应用 预览
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作者 谢军 《矿山测量》 2019年第3期92-96,共5页
卫星影像具有实效性强,获取时间快,覆盖广,成本低等特点;随着社会经济的发展,对地形图的实效性提出更高要求,文中以WordView卫星影像在甘肃礼县测区1:10000基础测绘中的应用为例,对如何利用0.5m卫星影像获取空三成果进行了研讨。研究表... 卫星影像具有实效性强,获取时间快,覆盖广,成本低等特点;随着社会经济的发展,对地形图的实效性提出更高要求,文中以WordView卫星影像在甘肃礼县测区1:10000基础测绘中的应用为例,对如何利用0.5m卫星影像获取空三成果进行了研讨。研究表明:卫星影像完全能满足1:10000基础测绘内业航测要求。 展开更多
关键词 卫星影像 ERDAS LPS 空三成果 DLG
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基于气象卫星的青藏高原低涡识别 预览
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作者 任素玲 方翔 +2 位作者 卢乃锰 刘清华 李云 《应用气象学报》 CSCD 北大核心 2019年第3期345-359,共15页
利用长时间序列气象卫星及多源数据,研究青藏高原低涡综合识别方法,完成低涡数据集并与青藏高原低涡年鉴中低涡位置、路径和分布进行对比分析。研究表明:卫星识别多年平均低涡分布存在两个高值区,分别位于西藏的中北部和青海西南部及青... 利用长时间序列气象卫星及多源数据,研究青藏高原低涡综合识别方法,完成低涡数据集并与青藏高原低涡年鉴中低涡位置、路径和分布进行对比分析。研究表明:卫星识别多年平均低涡分布存在两个高值区,分别位于西藏的中北部和青海西南部及青藏高原西部,在有探空站的青藏高原东部(90°E以东),卫星识别低涡高值区和年鉴数据吻合,冬半年,卫星识别低涡活动明显高于年鉴,主要为青藏高原西部低涡活动引起,逐年及2008年低涡路径对比也显示,有探空站区域卫星识别低涡和年鉴具有较好的一致性,表明卫星识别低涡在青藏高原东部地区的可信性;2015年青藏高原中西部新增3个探空站,年鉴中90°E以西低涡约占全年低涡总数量的22%,该区域卫星识别低涡和年鉴一致性较高,表明卫星识别低涡在高原中西部的可信性。因此,卫星识别低涡与年鉴低涡在有探空站区域有较好的一致性,可对年鉴中青藏高原东部低涡源地进行追踪,又可识别青藏高原中西部尤其是活跃于冬半年的低涡,是青藏高原年鉴低涡数据的有效补充。 展开更多
关键词 青藏高原低涡 卫星云图 青藏高原低涡活动频率 低涡路径
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Estimation of Land Surface Temperature of Yola, North Eastern Nigeria Using Landsat-7 ETM+ Satellite Image 预览
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作者 A. Alkasim A. A. Hayatu M. K. Salihu 《能源与动力工程(英文)》 2018年第10期449-456,共8页
The land surface temperature of Yola (latitude 9&deg11'N to 9&deg20'N and longitude 12&deg23'E to 12&deg33'E) North-eastern Nigeria was estimated using landsat-7 ETM+ satellite images. ... The land surface temperature of Yola (latitude 9&deg11'N to 9&deg20'N and longitude 12&deg23'E to 12&deg33'E) North-eastern Nigeria was estimated using landsat-7 ETM+ satellite images. ENVI 4.5 software, and Thermal band 6.2 were used for the estimation, land surface temperature, from Landsat-7 ETM+ imagery sensors acquired as a digital number (DN) range from 0 - 255 in thermal band. DNs were first converted to radiance values in Wm-2·sr-1·μm-1, using the bias and gain values specific to an individual pixel, then the radiance was converted eventually to surface temperature (in Kelvin). The results indicate that there is a significant variation in land surface temperature between the two different seasons in Yola. The mean surface temperatures estimated are 307.9 K and 298.1 K during the dry and rainy seasons respectively. The result obtained was compared with data obtained from Meteorological Department. The estimated land surface temperature showed a good correlation, with a difference of 2 K to 3 K. 展开更多
关键词 Land Surface Temperature Satellite Images Thermal Band RADIANCE and LANDSAT Data
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Spatio-Temporal Dynamic of Land Use and Land Cover in the Classified Forest of Djoli-Kera, South-Eastern, Chad 预览
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作者 Lucie Félicité Temgoua Behimnan Allaissem +3 位作者 Martin Tchamba Goy Saradoum Mbaiakambeye Mbaidje Osée Marie Caroline Momo Solefack 《林学期刊(英文)》 2018年第3期283-296,共14页
This study was carried out in the classified forest of Djoli-Kera found in the South-Eastern part of Chad. It aimed to analyze the spatial and temporal dy-namics of land cover between 1972 and 2013 and to determine th... This study was carried out in the classified forest of Djoli-Kera found in the South-Eastern part of Chad. It aimed to analyze the spatial and temporal dy-namics of land cover between 1972 and 2013 and to determine the drivers of vegetation degradation. The databases used were made up of 4 Landsat satellite images (1MSS of 1972, 5TM of 1984, 7ETM+ of 1990 and 2010) and a spot 6 image of 2013, supplemented by field studies. Satellite images were processed using ENVI and ArcGIS software. Interview was used to identify the activities carried out by the local population. In 1972, the classified forest consisted of four types of land cover, the most important of which was open forest (51%), followed by wooded savannah (26%), tree savannah (21%) and sparse vegetation consisting of farms and fallows (2%). Gradually open forest and tree savannah disappeared. In 2013, the main types of land cover were shrub savannah (40%), sparse vegetation (28%), wooded savannah (12%), bare soil (12%) and dwellings (8%). Livestock, agriculture, wood collection and bushfires are perceived by local population as main drivers of forest cover change. Awareness-raising, monitoring and regulation of access to resources must be pursued, but also managers of the classified forest must accompany the local populations in the planting of trees and the setting up of more efficient farming systems to reduce pressure on the forest’s resources. 展开更多
关键词 Land-Use LAND-COVER Satellite IMAGES Degradation CHAD
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Evaluation of Land Use &Land Cover Change Using Multi-Temporal Landsat Imagery: A Case Study Sulaimaniyah Governorate, Iraq 预览
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作者 Karwan Alkaradaghi Salahalddin S. Ali +1 位作者 Nadhir Al-Ansari Jan Laue 《地理信息系统(英文)》 2018年第3期247-260,共14页
Land use & land cover change detection in rapid growth urbanized area have been studied by many researchers and there are many works on this topic. Commonly, settlement sprawl in area depends on many factors such ... Land use & land cover change detection in rapid growth urbanized area have been studied by many researchers and there are many works on this topic. Commonly, settlement sprawl in area depends on many factors such as eco-nomic prosperity and population growth. Iraq is one of the countries which witnessed rapid development in the settlement area. Remote sensing and geographic information system (GIS) are analytical software technologies to evaluate this familiar worldwide phenomenon. This study illustrates settlement development in Sulaimaniyah Governorate from 2001 to 2017 using Landsat satellite imageries of different periods. All images had been classified using remote sensing software in order to proceed powerful mapping of land use classification. Maximum likelihood method is used in the accurately extracted solution information from geospatial imagery. Landsat images from the study area were categorized into four different classes. These are: forest, vegetation, soil, and settlement. Change detection analysis results illustrate that in the face of an explosive demographic shift in the settlement area where the record + 8.99 percent which is equivalent to 51.80 Km2 over a 16-year period and settlement area increasing from 3.87 percent in 2001 to 12.86 percent in 2017. Accuracy assessment model was used to evaluate (LULC) classified images. Accuracy results show an overall accuracy of 78.83% to 90.09% from 2001 to 2017 respectively while convincing results of Kappa coefficient given between substantial and almost perfect agreements. This study will help decision-makers in urban plan for future city development. 展开更多
关键词 SETTLEMENT Expansion GEOGRAPHIC Information System (GIS) LAND USE LAND Cover (LULC) LAND USE Classification Satellite Images Accuracy Assessment and Change Detection
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土地卫片执法信息技术审核规则及方法分析 预览
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作者 陶彣君 彭小伟 《资源环境与工程》 2018年第1期145-146,160共3页
卫片执法监督检查工作已成为落实执法监管共同责任机制的重要平台和维护国土资源管理秩序的有力抓手。从实际工作出发,基于土地管理多种数据源,阐述采用信息技术进行数据审核及相关的审核规则、方法,对于开展卫片执法检查数据审核具有... 卫片执法监督检查工作已成为落实执法监管共同责任机制的重要平台和维护国土资源管理秩序的有力抓手。从实际工作出发,基于土地管理多种数据源,阐述采用信息技术进行数据审核及相关的审核规则、方法,对于开展卫片执法检查数据审核具有一定的参考意义。 展开更多
关键词 卫片 土地卫片执法 疑似违法图斑 综合监管平台 备案
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基于梯度方向分布的图像质量评估及其应用
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作者 齐欢 申维和 +2 位作者 陈曦 张洪源 崔广涛 《航天控制》 CSCD 北大核心 2018年第6期9-13,24共6页
根据人类视觉系统的性质,提出了一种基于局部梯度方向分布的全参考图像质量评估算法。该算法利用图像的方向梯度直方图和信息熵理论提出图像结构规则度的有效表达方式,并结合结构规则度和亮度信息表征图像的质量,实验结果表明,所提算法... 根据人类视觉系统的性质,提出了一种基于局部梯度方向分布的全参考图像质量评估算法。该算法利用图像的方向梯度直方图和信息熵理论提出图像结构规则度的有效表达方式,并结合结构规则度和亮度信息表征图像的质量,实验结果表明,所提算法能够有效评估多类干扰图像的质量,与人眼感知效果保持较高的一致性,适用于多领域应用。 展开更多
关键词 图像质量 方向梯度直方图 人类视觉系统 卫星图像 灾区受灾评估
国产高分辨率卫星影像在1∶10000比例尺地形图更新中的应用 预览
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作者 于影 《测绘与空间地理信息》 2018年第3期81-82,86共3页
以辽宁省1∶10 000比例尺地形图更新为例,以国产高分辨率卫星遥感影像作为数据源,探讨了实现1∶10 000比例尺地形更新的方法。经过实践证明,利用高分辨率卫星遥感影像作为数据源进行1∶10 000比例尺地形图更新,是目前最快速、最经济的... 以辽宁省1∶10 000比例尺地形图更新为例,以国产高分辨率卫星遥感影像作为数据源,探讨了实现1∶10 000比例尺地形更新的方法。经过实践证明,利用高分辨率卫星遥感影像作为数据源进行1∶10 000比例尺地形图更新,是目前最快速、最经济的一种地形图更新方法。 展开更多
关键词 卫星影像 地形图 数据更新
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谷歌地图卫星影像数据获取关键技术研究 预览
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作者 胡水平 岳淑英 张求喜 《测绘与空间地理信息》 2018年第10期79-81,85共4页
通过对谷歌地图卫星影像获取及处理关键技术进行研究,给出了关键算法 Python 代码,成功获取了谷歌地图瓦片数据,并利用开源GDAL 库的强大影像处理能力,开发出了一套集瓦片下载、镶嵌与裁切、投影等功能于一体的软件,并应于测绘生产项目,
关键词 谷歌地图 卫星影像 瓦片 GDAL
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基于卫星图像的北极浮冰大小分布特征分析 预览
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作者 王玉 史文奇 +1 位作者 马玉贤 陈伟斌 《海洋技术学报》 2018年第2期50-55,共6页
随着全球气候变暖,海冰厚度逐渐变小,海冰面积逐渐缩小,开阔海域的面积越来越大,北极地区海冰也越来越容易受到海浪的侵袭导致浮冰发生破碎,加速海冰融化。因此在全球气候变暖的环境下,分析浮冰大小分布特征,对于研究北极海区的动量和... 随着全球气候变暖,海冰厚度逐渐变小,海冰面积逐渐缩小,开阔海域的面积越来越大,北极地区海冰也越来越容易受到海浪的侵袭导致浮冰发生破碎,加速海冰融化。因此在全球气候变暖的环境下,分析浮冰大小分布特征,对于研究北极海区的动量和热量收支有着重要意义,同时有助于改进现有的海冰模型。文中基于3种不同空间分辨率的卫星图像,利用限制增长法分析了2014年夏秋季转化季节波弗特海和楚科奇海的浮冰大小分布特征,所用的卫星图像包括Medea图像,RADARSAT-2图像以及Landsat 8图像,3种图像的空间分辨率分别为1 m,15 m和100 m。不同的空间分辨率为研究浮冰大小总体分布特征提供了一个广泛的数据基础,能够更充分地研究不同尺寸的浮冰大小分布。采用的限制增长法,能够自动识别并提取出浮冰,最终得到浮冰大小分布特征满足幂律分布形式,幂指数的范围在0.8~1.91之间,较大的浮冰对应的幂指数也相应较大,且随着远离海冰边界的距离,幂指数有增大的趋势。处于在夏秋转换季节,部分浮冰开始发生冻结,小尺度浮冰数量逐渐减少。 展开更多
关键词 卫星图像 限制增长法 浮冰大小 楚科奇海 波弗特海
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基于RPC模型的星上遥感卫星影像快速正射纠正 预览 被引量:1
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作者 晏杨 谢宝蓉 +2 位作者 李欣 杨培庆 杨博 《上海航天》 CSCD 2018年第1期110-116,共7页
针对基于有理多项式系数(rational polynomial coefficients,RPC)的逐点法正射纠正计算量繁复、影像耗时过长,不能满足大数据量的卫星影像数据星上快速正射纠正的需要等问题,提出了基于像平面坐标的二维直接线性变换(DLT)光学遥感卫星... 针对基于有理多项式系数(rational polynomial coefficients,RPC)的逐点法正射纠正计算量繁复、影像耗时过长,不能满足大数据量的卫星影像数据星上快速正射纠正的需要等问题,提出了基于像平面坐标的二维直接线性变换(DLT)光学遥感卫星影像星上快速正射纠正的方法。考虑到影像正射的精度和可靠性等需求,探究采用二维DLT进行影像正射的算法策略,并与逐点法正射纠正进行对比试验,在减小影像正射纠正的计算量、提高影像正射的速度和效率的情况下,尽可能保证正射的精度。试验结果表明:通过对比分析二维DLT的精度和效率,基于像平面坐标对应关系的二维DLT光学遥感卫星影像星上快速正射纠正理论及方法切实可行。 展开更多
关键词 二维直线线性变换(2D DLT) 星上处理 数字正射纠正 有理多项式系数(RPC)模型 效率改进 卫星影像 分块格网 精度验证
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Determining the Rate of Salinity of Persian Gulf Waters with the Aid of Satellite Images and Least Squares Method 预览
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作者 Ali Reza Moaddab Mostafa Khabazi Hasan Roosta 《海洋科学期刊(英文)》 2017年第1期155-168,共14页
As yet various methods have been used for determining the salinity rate of seas and oceans water. The current method of determining salinity rate of seas water has been field examination of various points of sea and d... As yet various methods have been used for determining the salinity rate of seas and oceans water. The current method of determining salinity rate of seas water has been field examination of various points of sea and determining its salinity rate. In the last decade, remote sensing satellite images have had high capability in determining sea waters salinity rate. Regarding that the present methods in remote sensing depend on the studied regions, therefore, the necessity of customization of these methods is felt. Fresh water springs due to impact on water salinity and temperature and also the environment physics and density like sound velocity are very significant and since coasts and islands of Persian Gulf are considered among arid and semi-arid regions and lack drinking water, access to fresh water springs has more significance. After studies performed, preparation of salinity rate observations and catching two series of proper images for felid data for complete coverage of the region, preprocessing and calibration was performed. For this purpose in turning the acquired radiance to reflection, ENVI software was used. The histogram of calibrated shades of gray rates in images was specified, so that reflection of each sample can be extracted from images. In this paper, the rate of least method efficiency in determining salinity rate of Persian Gulf waters was examined and finally identifying fresh water pits using remote sensing technique was done. The obtained results in the least squares methods after combining various bands of image with each other specified that combining 4 bands of 2, 3, 5 and 7 has the least standard deviation rate with training data and test, which is equal to 0.385 and 0.991978. 展开更多
关键词 SALINITY Satellite IMAGES Least SQUARES Method LANDSAT 5
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The Introduction of Promising Mineral Zones Bidkhan Area Using Satellite Imagery 预览
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作者 Alireza Ashofteh 《地质学期刊(英文)》 2017年第9期1404-1424,共21页
On the basis of new findings and some evidences related to porphyry mineralization, the exploration region of Bidkhan is considered as a promising mineral region for discovery of porphyry sort deposits. The findings f... On the basis of new findings and some evidences related to porphyry mineralization, the exploration region of Bidkhan is considered as a promising mineral region for discovery of porphyry sort deposits. The findings from various sections indicate that diverse topological events in a zonal and regional time span have resulted in physiochemical (thermodynamic) systems leading to expansive alterations (metamorphism) and mineralization in the central region of Bidkhan area. Alterations such as Propylitic, Silicating, Argillic, Phyllic and even Potassic concentrates at an area of about 10 km2 together with such structures as fissures have created the required and suitable condition for the formation of thermodynamic systems. Such systems are related to mineralization fluids mineralizer that accompanies the sort of activities that are clearly indicative of the existence of an active igneous source all forming a terrene at Bidkhan region which is very similar to mineralization porphyry systems. 展开更多
关键词 Bidkhan KERMAN GEOCHEMISTRY Satellite Images Promising REGIONS MINERAL POTENTIALS
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基于卫星遥感影像的森林资源二类调查 预览 被引量:5
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作者 孙亚丽 周筑 +1 位作者 黄海燕 戴益源 《西部林业科学》 CAS 2017年第2期150-152,156共4页
以易门县全境森林资源为对象,采用卫星影像图技术进行内业小班区划,并结合实地调查的方法,进行其森林资源二类调查。结果表明,利用卫星影像技术区划,具有成本低、进度快的优点,可缩短调查时间,能按时按量地完成调查任务,从而解决了传统... 以易门县全境森林资源为对象,采用卫星影像图技术进行内业小班区划,并结合实地调查的方法,进行其森林资源二类调查。结果表明,利用卫星影像技术区划,具有成本低、进度快的优点,可缩短调查时间,能按时按量地完成调查任务,从而解决了传统森林资源调查方法中小班区划耗时长、成本高的难题。 展开更多
关键词 卫星遥感影像 全国森林资源二类调查设计 影像判读 易门县 小班区划
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测绘工程在机场建设中的应用 预览 被引量:1
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作者 黄宇彤 马丽莉 《冶金丛刊》 2017年第2期96-98,共3页
测绘是做好机场建设工程的前提和基础,也是保证机场安全运营的关键,探究不同的测绘方法在机场建设中的应用对提高机场建设的效率和质量有着重要的意义。
关键词 导航台测量 卫星图片 高精度平面测量 自动测量机器人
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二级遥感技术在藏中联网工程中的应用 预览 被引量:1
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作者 刘厚健 程东幸 +3 位作者 赵顺阳 饶虎 樊柱军 张博 《电力勘测设计》 2017年第5期1-4,共4页
遥感技术是一种运用现代化的运载工具和传感器,探测和识别远距离研究对象的技术。本文利用二级遥感技术对藏中联网500 k V线路工程全线地质灾害及塔基地质条件进行了研究,发现线路R335-R 337/L336-L338段为一古滑坡体,并经现场调查、勘... 遥感技术是一种运用现代化的运载工具和传感器,探测和识别远距离研究对象的技术。本文利用二级遥感技术对藏中联网500 k V线路工程全线地质灾害及塔基地质条件进行了研究,发现线路R335-R 337/L336-L338段为一古滑坡体,并经现场调查、勘察及定量评价,验证了遥感解译结果的准确性,为进一步在输电线路工程,尤其是山高坡陡的线路工程中推广遥感技术奠定了基础。 展开更多
关键词 二级遥感技术 航空正射影像 卫星影像 塔基地质条件
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基于卫片的限行对车辆密度及排放的影响研究 被引量:3
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作者 孙改红 樊守彬 郭津津 《环境科学与技术》 CSCD 北大核心 2017年第6期179-183,共5页
针对“九三”阅兵期间单双号限行的尾气排放控制措施,通过Google Earth卫星影片资料获取北京道路实际车辆密度变化情况,评估限行对尾气排放的影响。研究对象为阅兵前后限行和非限行期间的14条典型道路。通过计算实际道路不同车型的车流... 针对“九三”阅兵期间单双号限行的尾气排放控制措施,通过Google Earth卫星影片资料获取北京道路实际车辆密度变化情况,评估限行对尾气排放的影响。研究对象为阅兵前后限行和非限行期间的14条典型道路。通过计算实际道路不同车型的车流密度和车流速度,应用COPERT模型计算尾气排放密度并对比分析变化情况,评估限行措施对机动车尾气排放控制的效果。研究表明,单双号限行期间不同类型道路中小客车密度降低10%~67%,平均值为47%,车速上升29%~41%;CO、HC、NOx和PM的排放密度分别下降49%、49%、29%和30%。该文提出的基于卫片资料的车辆密度数据进行机动车尾气排放密度的计算方法 ,有效的估算了限行措施对尾气排放的控制效果,为车流控制的环境效果评估提供一种新的思路和方法。 展开更多
关键词 卫片 单双号限行 车辆密度 减排效果
基于eCognition的高分辨率卫星影像的车辆检测实验设计 预览
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作者 郭杜杜 逯国生 《实验技术与管理》 北大核心 2017年第7期42-45,共4页
设计了利用eCognition进行高分辨率卫星影像的车辆检测实验的步骤,首先对目标影像选取关键参数进行多尺度分割;其次利用最小距离分类器进行分类,实验设计中将目标对象主要分为3类,即道路、汽车及其他类;最后以Worldview-1高分辨率卫星... 设计了利用eCognition进行高分辨率卫星影像的车辆检测实验的步骤,首先对目标影像选取关键参数进行多尺度分割;其次利用最小距离分类器进行分类,实验设计中将目标对象主要分为3类,即道路、汽车及其他类;最后以Worldview-1高分辨率卫星影像进行了车辆检测的实验。实验结果表明,所设计的实验过程能达到车辆检测的目的并且精度较高,实验过程的简单直观,可用于交通信息技术及应用专业本科实验教学课程。 展开更多
关键词 卫星影像 车辆检测实验 ECOGNITION 多尺度分割
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基于遥感影像的日照海岸带景观格局动态演化分析 预览
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作者 徐文阳 谢小平 +2 位作者 陈芝聪 白毛伟 叶卉 《曲阜师范大学学报:自然科学版》 CAS 2017年第3期93-99,共7页
日照海岸带受自然过程及人类活动的双重影响,部分或全部的自然景观转变为人为景观.本文基于RS和GIS技术对1991年、2002年和2015年的遥感影像进行解译分析,并根据实地考察的测量结果及取样分析进行监督分类,应用景观格局指数、动态度和... 日照海岸带受自然过程及人类活动的双重影响,部分或全部的自然景观转变为人为景观.本文基于RS和GIS技术对1991年、2002年和2015年的遥感影像进行解译分析,并根据实地考察的测量结果及取样分析进行监督分类,应用景观格局指数、动态度和景观转移矩阵等方法,对日照海岸带景观格局变化过程进行研究.研究结果表明1991-2002年间日照海岸带的滩涂、潟湖湿地、河口湿地等的面积减少,建设用地、养殖池面积增加,景观破碎化程度增加;2002-2015年则由于退池还湖、退池还滩等措施使滩涂、潟湖湿地面积及河口湿地面积增加,养殖池面积减少,景观类型破碎度增加,优势度减小,体现了人类活动双向作用特点. 展开更多
关键词 海岸带 景观格局 动态演化 遥感影像 日照
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