Remote Sensing Instructor: Professor Yuji Murayama Teaching Assistant: Niloofar Haji Mirza Aghasi What is remote sensing used for? Remote sensing is a method for getting information about of different objects on the planet, without any physical contacts with it. Image Source: cimss.ssec.wisc.edu What is remote sensing? Remote sensing is a technology foe sampling electromagnetic radiation to acquire and read non-immediate geospatial data from which to pull info more or less features and objects on his Earths land surface, seas, and air. - Dr. Nicholas Short Advantages of Remote Sensing • Provides a view for the large region • Offers Geo-referenced information and digital information • Most of the remote sensors operate in every season, every day, every time and even in real tough weather Elements of Remote Sensing Source:staff.aub.edu.lb Remotely Sensed Data Landsat/Ikonos/Quickbard/Aster 6 Satellite pictures Satellite imagery consists of photographs from which collected by satellites. Image Source: www.wonderwhizkids.com Japan Satellite View Image Source: www.loneotaku.net Satellites offer a Global View What does satellite imagery give you? -Information on land cover, land use, habitats, landscape and infrastructure -multiple engagements by time series -Mapping and monitoring changes and predict future Application of Remote Sensing Urbanization & Transportation • Urban planning • Roads network and transportation planning • City expansion • City boundaries by time • Wetland delineation Image source: www.ldeo.columbia.edu Image source: www.geospectra.net Application of Remote Sensing Agriculture The application of remote sensing in agriculture include: - Soil sensing - Farm classification - Farm condition assessment - Agriculture estimation - Mapping of farm and agricultural land characteristics - Mapping of land management practices - Compliance monitoring Wageningen UR 2002 Application of Remote Sensing Natural resource Management • • • • • • • • • Forestry: biodiversity, forest, deforestation Water source management Habitat analysis Environmental assessment Pest/disease outbreaks Impervious surface mapping Hydrology Mineral province Geomorphology Md. Bodruddoza Mia Satellite image of deforestation Comparison of an aerial photograph (bottom) with a radar image (top) of deforestation along a road Wageningen UR 2002 Application of Remote Sensing Land Use Land cover means any surface cover on the ground which can include vegetation, urban infrastructure, water, lake, mountain, transportation networks, buildings or any other. The attributes measured by remote sensing techniques relate to land cover, from which land use can be inferred, particularly with ancillary data or a priori cognition. Mapping Generating different maps from remotely sensed data can be so effective ad valuable. A classification of sensing elements and methodologies to generate theses remotely sensed models are essential for mapping. Two primary methods of generating elevation data are: Radar image of a continuously clouded area 1. Stereogrammetry techniques by air photos 2. Radar interferometry Map with the road network Wageningen UR 2002 Types of Satellites Geostationary Satellites A geostationary satellite is one of the satellites which is getting remote sense data and located satellite at an altitude of approximately 36000 kilometres and directly over the equator. Image Source: cimss.ssec.wisc.edu Types of Satellites Polar-Orbiting Satellites A polar orbit is a satellite which is located near to above of poles. This satellite mostly uses for earth observation by time. Image Source: globalmicrowave.org Some Image Processing Software • • • • ERDAS Imagine ENVI ILWIS ArcGIS 17 Reference • • • • • Jan Clevers, EXAMPLES OF APPLICATIONS WITH REMOTE SENSING IMAGES, Centre for Geo-Information,Dept. Environmental Sciences,Wageningen UR. Md. Bodruddoza Mia, Remote Sensing, GIS and Its application, Earth Resources Engineering, Kyushu University, Japan. Olga Wilhelmi, GIS in Weather and Society, Institute for the Study of Society and Environment National Center for Atmospheric Research Somchai Baimoung, Meteorological Early Warning Systems for Prevention and Mitigation of Natural Disasters:Case of Maa Wang River Basin, Weather Forecast Bureau,Thai Meteorological Department.