Two Conformal Projections for Constant-Height Surface to Plane Mapping
Publication: Journal of Surveying Engineering
Volume 147, Issue 2
Abstract
Regions at high elevations may require specific mapping solutions other than the conventional ellipsoid-to-grid projections, which produce large discrepancies between ground and projected distances. These particular solutions are known as low-distortion projections (LDPs). They can be realized by using an elevated ellipsoid (EE) or a constant-height surface (ChS) above the ellipsoid as the reference surface, or by means of a scaled projection. No conformal projections have been derived thus far for the ChS-to-plane transformation. This work aims to solve this problem by deriving the formulation of direct and transverse Mercator-type projections for ChS-to-plane conformal mapping.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The author is grateful to the editor and the anonymous reviewers for their valuable comments that helped to improve the manuscript.
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Information
Published In
Journal of Surveying Engineering
Volume 147 • Issue 2 • May 2021
Copyright
© 2020 American Society of Civil Engineers.
History
Received: Feb 7, 2020
Accepted: Oct 22, 2020
Published online: Dec 17, 2020
Published in print: May 1, 2021
Discussion open until: May 17, 2021
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