A GIS-ASSISTED RAIL CONSTRUCTION ECONOMETRIC MODEL THAT INCORPORATES LIDAR DATA
A GIS-ASSISTED RAIL CONSTRUCTION ECONOMETRIC MODEL THAT INCORPORATES LIDAR DATA
复制标题
包含激光雷达数据的 GIS 辅助铁路建设经济模型
DOI：
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发表时间：
2000
影响因子：
1.3
通讯作者：
S. Schill
中科院分区：
文献类型：
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作者：
D. Cowen;J. R. Jensen;Chad Hendrix;M. Hodgson;S. Schill
使用传统的现场方法来确定新的铁路引导轨道的最佳路线通常是耗时的，是昂贵的，并且不允许容易地调查替代路线。美国航天局赞助的南卡罗来纳州大学附属研究中心与诺福克南方公司合作开发了一个遥感和地理信息系统辅助的引导轨道路线选择模型。目的是将传统勘测路线与利用遥感和地理信息系统辅助建模的输出得出的路线进行比较。模型设计中的关键要素是成本面的计算。该模型的成本变量是根据诺福克南方雇员的专家意见制定的。该解决方案采用了栅格GIS经济计量路由模型，使用施工成本因素（如坡度（挖方和填方成本）、道路交叉口、河流交叉口和轨道成本）来探索潜在的路线。遥感数据的使用是研究的一个关键要素。基于网格的计量经济学模型中使用的数字高程模型是从光探测和测距（LIDAR）数据中获得的，具有精确的0.3 × 0.3米（1 × 1英尺）高程。使用遥感和GIS辅助建模选择的路线与传统的调查路线相似。基于GIS的最优路径引导-跟踪模型可以根据最重要的成本因素快速确定各种潜在路径。
Identifying the optimum route for new railroad lead-tracks using traditional field methods is often time-consuming, is costly, and does not allow for easy investigation of alternative routes. The NASA sponsored Affiliated Research Center (ARC) at the University of South Carolina worked with Norfolk Southern Corporation to develop a remote sensing and GISassisted lead-track route selection model. The objective was to compare the traditionally surveyed routes to those derived using the output from the remote sensing and GIs-assisted modeling. The critical element in the design of the model was the calculation of a cost surface. The cost variables for the model were developed based on expert advice from Norfolk Southern employees. The solution employed a raster GIS econometric routing model for the exploration of potential routes using construction cost factors such as grade (cut and fill cost), road crossings, stream crossings, and track cost. The use of remotely sensed data was a key element of the research. The digital elevation model used in the grid-based econometric model was obtained from Light Detection and Ranging (LIDAR) data with accurate 0.3- by 0.3-m (I- by 1-ft) elevation postings. The route selected using the remote sensing and GIS-assisted modeling was similar to the traditionally surveyed route. The GIS-based optimal path lead-track model can be used to identify rapidly a variety of potential routes based on the most important cost factors.