Refraction constitutes the major sorce of systematic errors in levelling. The phenomenon, suitably investigated and modeled by T. J. Kukkamaki, depends on the vertical temperature gradients in the lowest atmospheric layers above the ground surface. This approach leads to expressions, from which the refraction correction can be dediced. Current investigations have demonstrated that the refraction correction can be considerable, even in a single staff reading, and that it cannot be neglected. A complete understanding of the fphenomenon leads to some practical considerations to follow in the field.
Digital Temperature Measurement for Refraction Correction in Levelling
RADICIONI, Fabio;
1990
Abstract
Refraction constitutes the major sorce of systematic errors in levelling. The phenomenon, suitably investigated and modeled by T. J. Kukkamaki, depends on the vertical temperature gradients in the lowest atmospheric layers above the ground surface. This approach leads to expressions, from which the refraction correction can be dediced. Current investigations have demonstrated that the refraction correction can be considerable, even in a single staff reading, and that it cannot be neglected. A complete understanding of the fphenomenon leads to some practical considerations to follow in the field.File in questo prodotto:
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