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 Geospatial Solutions

Archive for August, 2013

Geospatial in the Mining Industry

Friday, August 23rd, 2013

A sound understanding of geography is needed in every phase of a mining venture development. Starting with exploration and resource mapping, the extraction of regional and local fracture patterns and the identification of lithogical unites, to mineral analysis, to finding an ideal location for the mining facility, including disaster management and environmental impact assessment of all elements.wheel

Earth observation information, from commercially available radar and optical remote sensing systems, is regarded as a powerful tool for all phases within the mining industry. Geospatial products, in particular, play an important role because of their unique ability to provide highly accurate and detailed 3D geospatial information and solutions that increase the efficiency of reconnaissance mapping, exploration, logistical planning, and production operations.

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A career in mapping stands the test of time

Tuesday, August 20th, 2013

A career in remote sensing and GIS exists in every imaginable discipline, from environmental science to commercial businesses and much more. Such a career path has a wide range of opportunities available to let you combine your passions or interests with GIS and or remote sensing for a satisfying and successful career. Intermap’s very own Senior Project Manager, who keeps us on track with our large mapping projects where we are currently mapping the diverse landscapes in the Philippine’s and Alaska, has been in the mapping industry for the past four decades.

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Compass Data

Friday, August 16th, 2013

Ground control points (or GCPs for short) consist of a system of points for a given blogproject area whose x, y, and z positions are known and referenced to a ground coordinate system, such as the North American Datum of 1983 (NAD 83), and whose images can be positively identified in corresponding imagery. Historically, such control was established by means of field surveys, until now. CompassData has a proven technology to provide extracted GCPs from remote sensing surveys, eliminating the need to have feet on the ground. Mr. Hayden Howard, Vice President at CompassData commented that “until recently, there has been no option for controlling an optical image in restricted areas such as China, Cuba and North Korea but with this technology we are now able to extract accurate coordinates for features that can be used to verify or control a satellite image or DEM.” CompassData’s technique has great advantages in remote and dangerous terrain. CompassData remotely sensed GCP (RSGSP) technique involves the extraction of accurate 3D RSGCPs from TerraSAR-X SpotLight and StripMap images.

They have evaluated the RSGCPs against Differential GPS control points and/or a highly accurate LiDAR DEM on varied test sites, all situated in challenging terrain and confirm accuracies to +/- <1m. Such control is ready for use in accurate georeferencing of airborne and spaceborne imagery and for the vertical and horizontal assessment of digital elevation data, to name two common applications of GCPs. Although GCPs collected by terrestrial means typically offer higher accuracies, this spaceborne approach is a significant milestone in control.

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DEM Accuracy Webinar

Tuesday, August 13th, 2013

The relationship between digital elevation model posting density and vertical accuracy is dependent on various terrain characteristics (e.g. slope, topographic variability, and land cover) as well as sensor characteristics (e.g. sensor type and viewing geometry). To obtain a better understanding of these relationships and of the factors that contribute to them, join Intermap and Carahsoft’s joint webinar entitled “The Importance of DEM Accuracy and How It’s Measured.” The webinar will present concise explanations about the difference between digital elevation model (DEM) resolution, precision, and accuracy, provide the primary statistical methods for determining elevation accuracy (RMSE, LE90, and LE95), as well as review what influences elevation accuracy, such as sensor technology and terrain characteristics.

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