网络地理信息技术在“地理信息技术”教学中的应用案例

正一、应用GE软件的"历史地图"功能突破RS的应用对于地理信息系统中"遥感技术及其应用"章节,课标要求结合实例,了解遥感(RS)在资源普查、环境和灾害监测中的应用。教师可在安装好谷歌地球软件(Google Earth,简称GE)的多媒体电脑上,向学生展示较大比例尺的卫星图像,引出遥感技术的定义及工作过程。     

The Monitoring of Red Tides Based on Modular Neural Networks Using Airborne Hyperspectral Remote Sensing

This paper proposes a red tide monitoring method based on clustering and modular neural networks. To obtain the features of red tide from a mass of aerial remote sensing hyperspectral data, first the Log Residual Correction （LRC） is used to normalize the data, and then clustering analysis is adopted to select and form the training samples for the neural networks. For rapid monitoring, the discriminator is composed of modular neural networks, whose structure and learning parameters are determined by an Adaptive Genetic Algorithm （AGA）. The experiments showed that this method can monitor red tide rapidly and effectively.     

Evaluating lake eutrophication with enhanced thematic mapper data in Wuhan

1 INTRODUCTION Increasing eutrophication of lakes in recent years as a result of human impact has become a se- rious environmental problem in China. Many lakes in the Jianghan Plain, South China, for example, especially near major cities, have been eutrop…     

信息视点

第35个“世界地球日”主题确定:善待地球科学发展 今年“世界地球日”的主题确定为:善待地球科学发展。近日,国土资源部办公厅发出通知,要求做好2004年4月22日第35个“世界地球日”科普宣传工作。 “世界地球日”宣传口号是:坚持科学发展观树立科学资源观 地球日是我们共同的节日!人与自然和谐才能拥有美好的明天!爱护环境,珍惜资源,建设小康社会     

APPLICATION OF REMOTE SENSING TECHNOLOGY TO POPULATION ESTIMATION

This paper attempts to explore a new avenue of urban small-regional population estimation by remote sensing technology, creatively and comprehensively for the first time using a residence count method, area (density)method and model method, incorporating the application experienqe of American scholars in the light of the state of our country. Firstly, the author proposes theoretical basis for population estimation by remote sensing, on the basis of analysing and evaluating the history and state quo of application of methods of population estimation by remote sens-ing. Secondly, two original types of mathematical models of population estimation are developed on the basis of remote sensing data, taking Tianjin City as an example. By both of the mathematical models the regional population may be estimated from remote sensing variable values with high accuracy. The number of the independent variables in the lat-ter model is somewhat smaller and the collection of remote sensing data is somewhat easier, but the deviation is a little larger. Finally, some viewpoints on the principled problems about the practical application of remote sensing to popu-lation estimation are out forward.     

RadarSAT-2影像在1∶50000 DOM快速生产中的应用

随着遥感技术的快速发展,雷达影像测量技术的重要性突显出来,它有力地克服了因测区自然地理环境艰难、气候条件复杂而带来的光学影像无法成图的不利局面,具有效率高、劳动强度低等优点。本文利用RadarSAT-2影像进行1∶50 000 DOM的试验生产,通过具体的生产过程,对雷达影像的数据特点、生产流程、精度指标、生产效率等方面进行了分析研究,为缩短地图更新周期、减少生产成本、提高空间信息获取的实时性提供了方法。     

泰坦参加第21届国际摄影测量与遥感大会技术展览会

第21届国际摄影测量与遥感大会技术展览会2008年7月7日在北京国际会议中心隆重开幕。来自世界各国的参会展商用各自的语言介绍着摄影测量和遥感技术的发展及最新成果,东方泰坦公司作为参展商参加了大会技术展览,作为企业,这次展览会不仅为参展企业提供了良好的展示与交流平台,也同时向国际3S企事业单位展示了企业的新技术;     

五、P23 摄影测量与遥感学

CH20080298机载三线阵传感器影像区域网联合平差= Combined Block Adjustment for Airborne Three-line CCD- Scanner Images/李德仁(武汉大学测绘遥感信息工程国家重点实验室)//测绘学报.-2007,36(3).-245～250机载三线阵扫描传感器飞行过程能够同步记录影像数据和POS数据。由于系统误差的存在,POS直接对地定位的精度还不能满足测制大比例尺地图的需要,因此,空中三角测量仍然是必须的。简述三线阵扫描传感器立体成像原理;在引入POS集成的传感器空间定位模型的基础上,建立机载三线阵传感器区域网联合平差的数学模型。平差试验结果表明,无论什么情况,区域网联合平差对提高机载三线阵传感器影像的定位精度都是必要的。图5表1参8     

卫星遥感技术揭开秘鲁泥质金字塔的面纱

意大利科学家日前宣布．他们采用卫星遥感新技术在秘鲁的卡华驰沙漠中发现了一座古代泥质金字塔。