Análise comparativa entre os métodos de geração de MDT aplicado ao Parque Ambiental Vitório Piassa - PR

• DOI: Atena

• Palavras-chave: Atena

• Keywords: Planialtimetric Data. Level Curves. Interpolators. Digital Terrain Models. Dados Planialtimétricos. Curvas de Nível. Interpoladores. Modelos Digitais de Terreno.

• Abstract:

  The present work aims to

  compare different methods of generation of

  Digital Terrain Model (MDT) applied to Vitório

  Piassa Environmental Park, located in the

  municipality of Pato Branco - PR. These models

  were elaborated in the SAGA GIS program with

  planialtimetric survey data carried out by the

  City Hall through RTK (Real Time Kinematic)

  equipment, with equidistance between the

  0.5m level curves in the WGS84 system.

  The rectangular regular ground interpolators

  denominated Inverse of the Distance Square

  were considered in the application, considering

  the weighted averages, the Ordinary (Global)

  Kriging that uses the spatial dependence between

  neighboring samples with minimum variance,

  and the Nearest Neighbor that maintains the

  values of Dimensions of the samples in the

  grid; And how unevenly the triangle Delaunay

  that preserved all the geomorphic features of

  the surface. The accuracy of the models was

  analyzed by the collection of control points

  obtained in the field with GPS (Global Position

  System) post-processed with Stop-and-Go

  method of 15 minutes per point. Differences

  in altitude were compared using the Inverse

  Distance Squares, Ordinary Kriging (Global)

  and Delaunay Triangulation interpolators, which

  presented lower Standard Deviation, with values

  1.666 m, 1.667 m and 1.679 m respectively,

  when compared to The Nearest Neighbor who

  got 1,814m.

• Número de páginas: 15