https://kr.mathworks.com/help/map/ref/map.geodesy.rectifyinglatitudeconverter.html
map.geodesy.RectifyingLatitudeConverter - Convert between geodetic and rectifying latitudes - MATLAB
A RectifyingLatitudeConverter object provides conversion methods between geodetic and rectifying latitudes for an ellipsoid with a given third flattening.
mapgeodesyconvertgeodeticlatitudes