a | 楕円体の長半径(m)。 The longer radius (m) of the ellipsoid. |
n | 楕円体の扁平率の逆数を\(F\)としたときの\(1/(2F-1)\)の値。 The value of \(1/(2F-1)\), where \(F\) is the inverse of the ellipticity of the ellipsoid. |
phi | 関数\(S\)の引数\(\phi\)。角度を表す量でradian単位で与える。 The argument \(\phi\) of the function \(S\). This quantity represents an angle in the radian unit. |