  In this paper, we give global expressions of geodesics and isoparametric
functions on a Randers sphere by navigation. We obtain isoparametric families
and focal submanifolds in (S^{n}; F; d\mu_{BH}) by Cartan-M\"unzner
polynomials. Further more, we construct some examples of closed and non-closed
geodesics, isoparametric functions, isoparametric families and focal
submanifolds.
