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原文传递 Reference Measurements of Pavement Management System Roadway Elevations, Technical Summary. Technical summary.

题名：	Reference Measurements of Pavement Management System Roadway Elevations, Technical Summary. Technical summary.
作者：	Cavell-J.A.; Dokka-R.
关键词：	Road-surfaces; Measurement-; *Benchmark-sections.;Testing-; Elevation-; Location-.
摘要：	New, more efficient methods of measuring road surfaces, including using moving vehicles, are being developed and deployed. Testing the veracity of such data presents its own problems. Busy, heavily traveled highways do not lend themselves to easy occupation for careful measurement by conventional means. The advent of GULFNet by the Louisiana State University (LSU) Center for Geoinformatics (C4G) provides the ability to get highly precise and accurate positions anywhere within the state, tied to the National Spatial Reference System (NSRS), which enables the establishment of benchmark sections of roadways against which the performance of the new methods may be tested. The LSU C4G with the cooperation of the personnel of the Louisiana Department of Transportation and Development (LADOTD) accessed and measured the elevation and location of points quickly and safely along test sections of highways in each LADOTD district in the state. The precisions of the measurements, as reported by the Real-Time Kinematic (RTK) engine, average better than 3 cm and three standard deviations (3 omega).
报告类型：	科技报告