Transposição de Datum
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Abstract
O presente trabalho trata da determinação dos valores diferenciais das coordenadas geocêntricas entre dois datums geodésicos. Estes valores são determinados pelas fórmulas de R. M. Rapp, utilizando pares de coordenadas de pontos determinados em dois datums e realizando ajuste pelo método dos mínimos quadrados.
Estes valores (ΔX, ΔY, ΔZ, ΔA, ΔF, diferença das coordenadas e dos parâmetros do elipsoide, serão utilizados nas fórmulas de Molondensky onde dado um ponto num datum podemos transformá-lo para outro datum. Esta aplicação tem em vista uniformizar os diversos datums no Brasil e também corrigir as coordenadas de satélites que são fornecidas no Datum SAD-69 e desejamos normalmente no Córrego Alegre.
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