A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Abstract The geometry of the ellipse of normal section is studied in relation to widely separated points on the spheroid of reference. It is found that antipodal regions exist where spatial azimuth becomes inconsistent with the shorter surface distance of the normal section arc. A target height correction of $ 180^{o} $ becomes apparent. An antipodal region for the chord is also investigated, this being where the method of determining position by means of chord length and spatial azimuth can lead to two solutions and is therefore not satisfactory.
Abstract The geometry of the ellipse of normal section is studied in relation to widely separated points on the spheroid of reference. It is found that antipodal regions exist where spatial azimuth becomes inconsistent with the shorter surface distance of the normal section arc. A target height correction of $ 180^{o} $ becomes apparent. An antipodal region for the chord is also investigated, this being where the method of determining position by means of chord length and spatial azimuth can lead to two solutions and is therefore not satisfactory.
The antipodal normal section
Bowring, B. R. (author)
Bulletin Géodésique ; 52
1978
Article (Journal)
Electronic Resource
English
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