Optimal scale factor on the central meridian for a 2°TM map projection in TWD97

The purpose of this paper is to study the optimal scale factor on the central meridian in order to minimize distortions of the 2°Transverse Mercator map projection in TWD97. The optimal scale factor is first derived according to the Airy optimal theory of distortions. Next, the influences of the cur...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the Chinese Institute of Engineers 2014-01, Vol.37 (1), p.103-109
Main Authors: You, Rey-Jer, Ko, Cheng-Hung
Format: Article
Language:English
Subjects:
map projection
optimal theory of distortions
scale factor
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The purpose of this paper is to study the optimal scale factor on the central meridian in order to minimize distortions of the 2°Transverse Mercator map projection in TWD97. The optimal scale factor is first derived according to the Airy optimal theory of distortions. Next, the influences of the current and optimal scale factors on local length and area distortions are discussed and analyzed. The results show that the value of the optimal scale factor on the central meridian under consideration is 0.999942 and leads to minimal local distortions in both distances and areas on the island of Taiwan.
ISSN:0253-3839
2158-7299
DOI:10.1080/02533839.2012.751335