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Title : High Accuracy Pavement Comparison between Low Level Mapping and Mobile Lidar Mapping for an Interstate Project for the Pennsylvania Department of Transportation (Penndot)
Company : Pennsylvania Department of Transportation
File Name : Loose.pdf
Size : 570419
Type : application/pdf
Date : 15-Jul-2014
Downloads : 7

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Author: Michael Loose

The increasing commercial use of Mobile Mapping LiDAR Technology, especially for transportation applications, is revolutionizing the way that pavement elevations are captured. However, existing technologies such as low altitude mapping photography (LAMP) or helicopter based photogrammetry are still used largely because of their proven accuracies and known cost factors over many years of use. Mobile LiDAR has the potential to increase accuracy, improve speed in project delivery and reduce costs for data collection. To test the feasibility of replacing LAMP based photogrammetry, PennDOT’s Photogrammetry and Surveys Section, along with engineering District 4-0, are working (at the time of this abstract submission) to compare mapping data collected by traditional LAMP methods and data compiled from mobile LiDAR. The area chosen was a six mile section of Interstate 84 in Pike County, Pennsylvania. Mobile LiDAR data was captured with an Optech Lynx M1 Mobile Mapping System (MMS) owned and operated by Photo Science, a Quantum Spatial Company, LAMP photography was flown at a negative scale of 1:600 (300 feet AMT) by Richard Crouse, Inc both companies were under contract with PennDOT. Ground truthing will be done by survey grade GPS combined with field differential leveling to provide a minimum of 40 test points that will be used to access and compare the horizontal and vertical accuracies of both data sets. Time and cost comparisons will also be documented. The oral presentation will provide information on the investigation’s general approach, project design parameters, testing procedures and results, as well as, final conclusions.
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