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Master's Dissertation
DOI
10.11606/D.18.2006.tde-27042006-152418
Document
Author
Full name
Antonio José Prado Martins Santos
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2006
Supervisor
Committee
Schaal, Ricardo Ernesto (President)
Françoso, Maria Teresa
Silva, Irineu da
Title in Portuguese
Proposta de ajustamento para melhoria da confiabilidade e precisão dos pontos de rede geodésicas para fins topográficos locais
Keywords in Portuguese
confiabilidade
modelo paramétrico
outliers
redes geodésicas
Abstract in Portuguese
Em levantamentos geodésicos planialtimétrico se faz necessário conhecer a qualidade das coordenadas estimadas de acordo com o tipo de aplicação a que se destinam. Este trabalho mostra de modo didático o estudo das teorias de análise de qualidade de rede GPS, baseando-se nas teorias de confiabilidade de rede propostos por Baarda, em 1968. As hipóteses estatísticas são fundamentais para elaboração dos testes para detecção de erros grosseiros (outliers), que constitui a base para a análise da confiabilidade de rede. Neste trabalho são propostas três estratégias, desenvolvidas em MathCAD, para a análise da qualidade do ajustamento. Os resultados obtidos foram comparados com os dos programas comerciais, Ski-Pro e Ashtech Solution, e também validados por medidas de campo feitas com estação total. As três estratégias propostas, para a rede em estudo implantada no Campus II da USP, apresentaram bons resultados
Title in English
Adjustment proposal for improving of the reliability and precision of geodetic network points for local
Keywords in English
geodetic networks
outliers
parametric model
reliability
Abstract in English
Geodetic planimetric survey requires the knowledge of the coordinates quality, estimated according to the final application. This work shows a didactic way on the study on theoretical analyses on quality of GPS networks, based on reliability network proposed by Baarda in 1968. Statistical hypotheses are fundamental to development of outliers’ detection tests, which consists the base for network reliability. In this work, three strategies are proposed, developed in MathCAD, to analyze adjustment quality. The results were compared with the results of two commercial programs, Ski-Pro and Ashtech Solution, and also field validation measurements with total station. The three proposed strategy, applied on a pilot network located at the Campus II of USP, gave good results
 
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Dissertacao.pdf (2.14 Mbytes)
Publishing Date
2006-05-16
 
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