Cosecant tropospheric mapping function.
T sec(const T &x)
Calculates the secant of a value (sec(x) = csc(pi/2 - x) = 1 / cos(x))
T csc(const T &x)
Calculates the cosecant of a value (csc(x) = sec(pi/2 - x) = 1 / sin(x))
double calcTropoMapFunc_secant(double zenithDistance)
Calculates the mapping factor as cosecant of the elevation (= secant of the zenith distance)
double calcTropoMapFunc_cosecant(double elevation)
Calculates the mapping factor as cosecant of the elevation.