Types of standard coordinate systems UTM State Plane Texas State Mapping System

Types of standard coordinate systems utm state plane

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Types of standard coordinate systems: UTM, State Plane, Texas State Mapping System, Standard Hydrologic GridSpatial Reference in ArcGIS 10 requires projection and map extentdr gemson, IIAEM, JU, Bangalore104
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Learning Objectives:By the end of this class you should be able to:describe the role of geodesy as a basis for earth datumsDisplay data from GPS in ArcMap and Google Earthlist the basic types of map projectionidentify the properties of common map projectionsproperly use the terminology of common coordinate systemsuse spatial references in ArcMap so that geographic data is properly displayeddetermine the spatial reference system associated with a feature class or data frameuse ArcGIS to convert between coordinate systems calculate distances on a spherical earth and in a projected coordinate systemdr gemson, IIAEM, JU, Bangalore105
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Readings:In ArcGIS Desktop 10 Help library/ Professional library/ Guide books/ Map projectionsdr gemson, IIAEM, JU, Bangalore106
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(Press and hold)Trimble GeoXHTMGarmin GPSMAP 276C GPS Receiver Global Position Systemsdr gemson, IIAEM, JU, Bangalore107
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How GPS works in five logical steps: 1.The basis of GPS is triangulation from satellites2.GPS receiver measures distance from satellite using the travel time of radio signals3.To measure travel time, GPS needs very accurate timing 4.Along with distance, you need to know exactly where the satellites are in space. Satellite location. High orbits and careful monitoring are the secret5.You must correct for any delays the signal experiences as it travels through the atmospheredr gemson, IIAEM, JU, Bangalore108
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GPS SatellitesSatellites are distributed among six offset orbital planes24 satellites6 orbital planes12 hour return interval for each satellitedr gemson, IIAEM, JU, Bangalore109
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Distance from satelliteRadio waves = speed of lightReceivers have nanosecond accuracy (0.000000001 second)All satellites transmit same signal “string” at same timeDifference in time from satellite to time received gives distance from satellitedr gemson, IIAEM, JU, Bangalore110
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Triangulationdr gemson, IIAEM, JU, Bangalore111
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Triangulationdr gemson, IIAEM, JU, Bangalore112
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GPS location of Mabel Lee Hall, University of Nebraska, Lincolndr gemson, IIAEM, JU, Bangalore113
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dr gemson, IIAEM, JU, Bangalore114Meridian section of the Earth, showing the reference ellipsoid and gravity field.
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dr gemson, IIAEM, JU, Bangalore115
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dr gemson, IIAEM, JU, Bangalore116For navigational purposes, the Earth's surface can be represented by an ellipsoid of rotation around the Earth's spin axis. The size and shape of the best-fitting ellipsoid are chosen to match the sea-level equipotential surface.
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