An Improved Approach for the Control Measurements of a Ski-Flying Hill Inrun: A Case Study of Planica

Abstract

Ski jumping hills should be prepared for competitions in accordance with project documentation in order to ensure safe and fair conditions for competitors. Geodesy/surveying is essential for guiding preparations and controlling the actual shape of the hill. In this article, we present a methodology for the control measurements and preparation of an inrun for a ski-flying hill in Planica. On each side of the track, there is metal tube that guides the trolley, which mills tracks into the ice. A special platform containing three measuring prisms was designed to control the position of the tubes. The proposed method was thoroughly analyzed in terms of its measurement quality and compared to previously used methodologies. The empirical results suggest that our proposed platform provides inrun geometry with a higher quality than previously used methods.

An Innovative Approach to Surveying the Geometry of Visibility Triangles at Railway Level Crossings

“…Urbančič et al [ 48 ] suggested an improved approach for the control measurements of a ski-flying hill run in a case study of Planica. They presented a specially designed platform containing three measuring prisms to control the position of pipes (a metal tube is located on each side of the track to guide the trolley that mills tracks into the ice).…”

O Papel das Covariâncias na Análise de Deformação Aplicada ao Monitoramento Geodésico de Estruturas

“…Uma das alternativas para a análise de deformação de estruturas naturais ou artificiais é por meio do monitoramento geodésico, utilizando, por exemplo, sistemas GNSS (Global Navigation Satellite System) (GULAL, 2013;TIWARI et al, 2018;DURDAG et al, 2018); estação-total (URBANČIČ et al, 2020;ZAMINPARDAZ et al, 2020) ou laser scanner terrestre (ANTOVA et al, 2015;HOLST;KUHLMANN, 2016;JAAFAR et al, 2017). Neste contexto, têm-se diversos estudos recentes a nível nacional sobre o tema (MIRANDA; VEIGA, 2016;FERREIRA;CHAVES, 2017;SAMPAIO et al, 2019;GONÇALVES;MEDEIROS et al, 2020;ALVES et al, 2020).…”