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| Aerotec provides several different, yet complementary, types of airborne remote sensing data products suitable for railway GIS database population, facilities inventory, and right-of-way management applications. |
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1. Continuous (time-sequenced) overlapping vertical and oblique high-resolution color digital aerial photography.
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2. Ortho-rectified color digital aerial photography
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3. Broadcast quality color digital video (vertical and oblique)
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4. Airborne LIDAR data for digital terrain models/contour maps
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a. High-density [20 – 40 points/square meter]
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b. Uniform [elliptical scan pattern] |
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5. LIDAR intensity imagery |
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6. Color 3D LIDAR models |
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7. Scaled planimetric/contour maps/drawings |
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HotLinx Continuous Imagery Association/Geo-reference File |
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Aerotec provides both the continuous vertical and oblique imagery hot-linked from an Excel spreadsheet for easy access and presentation of geo-referencing information. This HotLinx data file can be accessed by the link below. Simply click on a row in the spreadsheet (using either the specific customer-provided facility identifier or location information to access the associated oblique image. |
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Aerotec’s broadcast quality color video (vertical and oblique) is edited (taking out aircraft turning maneuvers and other extraneous aircraft positioning maneuvers) to provide a continuous, uninterrupted video of the entire right-of-way route of interest. GPS positioning of the video can be accomplished and used with appropriate software products such as Aerotec’s PLS-CAD Image/Video Player product for electric power transmission engineering. |
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| Click Here to view sample oblique video. (Requires Windows Media Player) |
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| Click Here to view sample vertical video. (Requires Windows Media Player) |
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LIDAR Intensity Imagery
Click image to enlarge.
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Aerotec’s LIDAR Intensity Imagery is produced directly from the intensity of the LIDAR return signals. Aerotec’s high-density, uniform LIDAR scan pattern facilitates the production of a high-quality pseudo-ortho-photograph suitable for use as a background image for any of several types of mapping/drawing products. The LIDAR intensity image maintains the horizontal accuracy of the LIDAR data itself making it extremely useful for digitizing facilities location information, determining edge of pavement/rail, etc. |
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Colorized LIDAR
Model
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Colorized LIDAR
Model
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Grayscale LIDAR
Model
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Grayscale LIDAR
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Grayscale LIDAR
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Grayscale LIDAR
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Grayscale LIDAR
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Color 3D LIDAR Models
Click thumbnail to enlarge.
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Aerotec’s color 3D LIDAR models are produced using a combination of Aerotec’s LIDAR data and digital aerial ortho-photography. The models can be effectively used to assess/resolve clearance issues since an accurate distance can be measured between any two points in the LIDAR model. Additionally, the models serve as very effective visualization tools. |
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Drawing/Mapping Products
Click image to enlarge.
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Aerotec’s airborne digital remote sensing data products can be combined in various ways to produce any of several types of drawing/mapping products. The following drawing/map (AutoCAD and/or Microstation) illustrates the construction of a right-of-way contour map by |
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| 1. Using the LIDAR data to construct a digital terrain model from which contour lines (constant elevation) are constructed, |
| 2. Using the color high-resolution aerial ortho-photography as a background for identifying various facility and geographic information, and |
| 3. Using the LIDAR intensity image as a background image to support the accurate digitization (location) of facility and/or geographic information. |
| 4. Various types of environmental and/or construction hazards (as well as facilities) could be depicted on this type of planimetric map. |
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