Mapa De Sustentabilidade Territorial Gerado Por Técnicas De Geoprocessamento E De Sensoriamento Remoto

Nascimento, Paulo Sérgio Rezende; Garcia, Gilberto J.

doi:10.14295/holos.v6i1.71

Cited by 1 publication

(3 citation statements)

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“…LIDAR is a technology that uses active remote sensing equipment, which emits electromagnetic radiation to the object of interest and measures the radiation that is reflected to a receiver after interacting with the Earth's atmosphere or objects [6]. This technology has been perfected from the fundamentals of remote sensing [7].…”

Section: Remote Sensingmentioning

confidence: 99%

“…Laser scanning has been applied in several areas of knowledge, especially in engineering, through geodetic and topographic sciences, among others [7]. In general, this term describes any type of technology that measures distances repeatedly and accurately (through time measurement).…”

Section: Fundamentals Of Terrestrial Laser Scanningmentioning

confidence: 99%

“…The laser scanner is a remote sensing device used to measure the distance between the sensor and the surface of objects. Its operation is based on the use of laser beams that are emitted toward the targets ( [11] cited in [7]). These beams are directed to the environment with the aid of a mirror, or prism, and a motor that generates the horizontal rotation around the vertical axis of the instrument [12], as shown in Figure 1.…”

Section: Fundamentals Of Terrestrial Laser Scanningmentioning

confidence: 99%

See 2 more Smart Citations

Study of the application of terrestrial laser scanning for identification of pathologies in concrete structures

Netto¹,

Carvalho²,

Reis³

et al. 2023

Reinforced Concrete Structures - Innovations in Materials, Design and Analysis

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Laser scanning enhances classic field surveys. The terrestrial laser scanner is a versatile device with application in various areas of knowledge, which uses remote sensing fundamentals to determine point coordinates. It is a remote, active, noninvasive, nondestructive and high-precision technique to capture reality that records from thousands to millions of points per second in a detailed representation of the situation called a point cloud. The surveys are performed along the object of interest in a process called scanning, which has as its gross product a dense cloud of three-dimensional points of the scanned object. This point cloud stores information about the object’s geometry, return pulse intensity, and point color data. As a way of extending the uses of terrestrial laser scanning, this work studies the application of this method in civil engineering, through the identification of pathologies in reinforced concrete structures, aiming to show how geoinformation can be employed in this area. To this end, a case study of the São Cristóvão Viaduct was conducted in the city of Rio de Janeiro. This study included definition of the site of analysis; planning and execution of the field survey to collect raw data; processing of the point cloud; and generation of a three-dimensional surface for global visualization of the structure and identification of pathological manifestations and the regions where they were observed. Concrete structures in general are affected by various external factors, such as weather and anthropogenic actions, which contribute to their wear.

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Section: Remote Sensingmentioning

confidence: 99%

Section: Fundamentals Of Terrestrial Laser Scanningmentioning

confidence: 99%