ICC Programming

Dynamic 3D

4509.2 - 3D Models to Identify and to Quantify Obstructions in Airport Protection Zones

Tuesday, July 4
1:50 PM - 2:10 PM
Location: Harding

Violations in airports protection zones represent problems of high complexity to the economy of cities. When we consider the land use and occupation in areas around airports, many others factors are critical and must be taken into account in order to guarantee the safety of takeoff and landing operations. Airports protection zones are defined by general and specific or basic plans. These plans are determined by 3D limiting surfaces that establish the volume of airspace at and around the airport that must be kept free of obstacles, imposing some land use restrictions.
In 2008 we implemented a Geographical Information System (GIS) for zoning the land use and occupation in an area surrounding Salgado Filho International Airport, city of Porto Alegre, Rio Grande do Sul State, south of Brazil. The purpose of this GIS was to allow quick analysis of technical feasibility of constructive projects in compliance with recommendations given by Airport Safety Zoning Specific Plan (PEZPA) and by Municipal Master Plan Design for Environmental and Development (PDDUA). The spatial data were obtained from topographic maps dating from 1982, and digitized in 2001/2002, and from 2D cartographic representation of PEZPA (Oliveira, 2008; Iescheck and Oliveira, 2011).
In 2015, the Brazilian Department of Airspace Control replaced PEZPA by the Airport Safety Zoning Basic Plan (PBZPA). This change on legal aspects concerning airport protection zone together with PDDUA reformulation and the new topographic mapping of Porto Alegre, more accurate and updated, motivated us to develop new researches on this subject.
Considering that airports protection zones are defined by limiting surfaces, accurate 3D geospatial information is fundamental to better visualize and specify land use restrictions. The objective of this work is to create 3D models of the area surrounding Salgado Filho International Airport in order to identify and to quantify obstructions related to urban land parcels (plots), buildings and critical areas where constructions may not be allowed, based on the limiting restriction surfaces set by PBZPA.
The methodology entails: definition of the required data; 2D and 3D data modeling (GIS implementation); 3D models generation and spatial analysis (evaluation and results). Data used for this research refer to plots, buildings, roads, Digital Terrain Model, Digital Surface Model and PBZPA. They were derived from topographic maps (1:1.000), ortophotos, lidar data and documents about PBZPA.
The results were achieved from spatial analysis performed using 3D models of plots elevation, buildings elevation and PBZPA limiting surfaces. Considering an accuracy of 0.5 m (horizontally and vertically), results from the comparisons of plots elevation with PBZPA and from buildings elevation with PBZPA show that:
(1) From a total of 106838 plots, covering an area of 69.68 km2, 4826 plots (4.52%) exceeded the limiting restriction surfaces (4615 totally and 211 partially) which corresponds to an area of 3.32 km2 (4.76%). Also, 1054 plots (0.99%), covering an area of 0.58 km2 (0.84%), represent critical areas where constructions may not be allowed.
(2) From a total of 200573 buildings, 27.86 km2 of built-up area, 26418 buildings (13.17%) exceeded the limiting restriction surfaces (26077 totally and 341 partially) which corresponds to a built-up area of 4.33 km2 (15.54%).
In this work we created 3D models to identify and to quantify obstructions of the area surrounding Salgado Filho International Airport. Results showed critical areas with airspace obstructions that must be monitored. Also, new technologies together with accurate and up-to-date geospatial information are fundamental to face the problem of land use restrictions in airports protection zones.

Andrea L. Iescheck

Professor
Federal University of Rio Grande do Sul

Graduated in Cartographic Engineering from the Federal University of Paraná (1989), master's degree in Geodetic Sciences from the Federal University of Paraná (1996) and PhD in Geodesic Sciences Federal University of Paraná (2006) is currently Associate Professor in the Department of Geodesy, Institute of Geosciences, Federal University of Rio Grande do Sul. In the context of scientific and technological production we include the following topics: volume visualization, 3D data modeling, geospatial data quality, geographic information system, spatial data infrastructure, 3D mapping, data structure in GIS and map design.

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Gabriela P. Falavigna

Student
Federal University of Rio Grande do Sul

Under graduated student in Cartographic Engineering from the Federal University of Rio Grande do Sul. Scientific scholarship in geodesy and cartography.

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Luciene S. Delazari

Professor
Federal University of Paraná

Dr Luciene Delazari is a Senior Lecturer in Cartography and GIS at Federal Unviersity of Paraná. She is he Head of Graduate PRogram in Geodetic Sciences and Editor-in-Chief of Bulletin of Geodetic Sciences. Her research interests focus around geoinformatics, Cartographic interfaces and interactivity and mapping.

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