00781515

Component

https://doi.org/10.3141/1690-14

http://scholar.google.com...ddin&publication_year=1999

The combination of airborne laser and digital camera technologies can be used as a cost-effective and efficient means of digital mapping for civil and environmental applications. A framework for the use of these remote-sensing technologies in conjunction with Global Positioning System (PGS) receivers for digital mapping of infrastructure projects is presented. An example of the benefit of airborne laser terrain mapping combined with differential positioning with a GPS is low-altitude, high-speed laser scanning of up to 81 sq km (20,000 acres) per day, which achieves an accuracy of 10 cm with reduced operating constraints, such as cloud and vegetation cover, traffic and usage, and time of day. The three-dimensional digital coordinate data are directly loaded into terrain mapping and computer-aided design software. This leads to efficient and error-free data processing and map generation. Conventional topographic surveys are slow, and aerial photogrammetry is limited by operating constraints and time-consuming data processing and interpretation. Examples of recent applications of the system for diverse projects like pipeline networks, power transmission lines, railroad tracks, and freeway interchanges are presented.

This paper appears in Transportation Research Record No. 1690, Roadside Safety and Other General Design Issues.

English

p. 121-125

1999

Transportation Research Record

0309071208

Figures (2) ; Photos (4) ; References (2)

Accuracy; Condition surveys; Digital mapping; Digitized photography; Global Positioning System; Infrastructure; Inventory

Airborne laser terrain mapping; Rapid methods

Design; Freight Transportation; Highways; Planning and Forecasting; I21: Planning of Transport Infrastructure

TRIS, TRB, ATRI

Jan 21 2000 12:00AM

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• HYDRODYNAMIC COUNTERMEASURES FOR LOCAL PIER SCOUR
• REEXAMINATION OF ROADSIDE ENCROACHMENT DATA (WITH DISCUSSION AND CLOSURE)
• RESOURCE SHARING: WIRELESS TELECOMMUNICATIONS SITE LEASE RATES
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