Sunday, September 15, 2019
Lidar
Using LiDAR Data At Vermont Electric Power Co. Prepared By: Jarrod Harper Phone: (802) 770? 6223 Email: [email protected] com What is LiDAR? Light Detection and Ranging †¢ The dictionary title:  a measuring system that detects and locates objects on the same principle as radar but uses light from a laser †¢ A method for quickly and accurately collecting ground information from an aerial platform using a laser and ground control. †¢ In the technical definition of the word, LiDAR is a survey but it cannot be used for a legal boundary survey. How is LiDAR Data Collected?What Data is Collected During a Flight? â€Å"Everything ††¢ Foliage †¢ Bare Earth †¢ Transmission Lines and Towers â₠¬ ¢ Railway Beds †¢ Roadways †¢ Vehicles †¢ Buildings †¢ etc. Optional †¢ Photography †¢ Weather Conditions What Were the Deliverables to VELCO? †¢ DTM – Digital Terrain Model †¢ Orthorectified Imagery †¢ AutoCAD Drawings †¢Contours †¢Streams †¢Roads †¢Buildings †¢Utility Lines and Poles †¢Edge of Trees †¢ PLS? CADD Terrain Model PLS? CADD (Power Line Systems ? Computer Aided Design and Drafting): overhead power line design software What Has VELCO Created With the Data? New Transmission Line Designs †¢ Permitting Drawings †¢ EPSC (Erosion Prevention and Soil Containment) Plans †¢ Aesthetic Mitigation Plans †¢ Tree Planting †¢ etc. Issues Encountered With the Data? †¢ Mobilization †¢ Ground Control †¢ F oliage †¢ Units Conversion LiDAR Data Collected in October 2006 Cost for LiDAR? †¢ Aerial Laser Ground Profile – DTM:  $743. 75 /mile †¢ Digital Imagery and Orthophotography – $743. 75 /mile †¢ AutoCAD Mapping – $637. 50 /mile †¢ PLS? CADD Format Files – $185. 00 /mile †¢ Cost Per Mile:  $2,310. 00 †¢ Miles Surveyed:  52. 5 †¢ Total Project Cost:  $121,275. 00
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