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Reference Measurements of Pavement Management System Roadway Elevations. Final rept.
| 题名： | Reference Measurements of Pavement Management System Roadway Elevations. Final rept. |
| 作者： | Cavell-J.A.; Dokka-R. |
| 关键词： | *Pavement-management; *Road-measurement; *Road-surfaces.;Test-sections; Elevations-; Benchmark-sections. |
| 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 measurements by conventional means. The advent of GULFNet by the Louisiana State University (LSU) Center for Geoinformatics (C4G) provides the ability to get highly precise, accurate positions anywhere within the state tied to the National Spatial Reference System (NSRS), which enabled the establishment of benchmark sections of roadway against which the performance of new methods may be tested. The LSU C4G with the cooperation of Louisiana Department of Transportation (LADOTD) personnel accessed and measured the elevations and locations of points, quickly and safely, along test sections of highways in each LADOTD district. The precisions of the measurements, as reported by the Real-Time Kinematic (RTK) engine, averaged better than 3 cm at three standard deviations (3 omega). Recommendations are made for using the measurements at the sites for testing the Moving Vehicle Rapid Mapping (MVRM) systems to assess the precisions reasonably to be expected by these systems under a variety of circumstances. |
| 报告类型： | 科技报告 |
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