  We consider the 3D inverse scattering problem with non-over-determined
scattering data. The data are the scattering amplitude $A(\beta, \alpha_0, k)$
for all $\beta \in S_\beta^2$, where $S_\beta^2$ is an open subset of the unit
sphere $S^2$ in $\mathbb{R}^3$, $\alpha_0 \in S^2$ is fixed, and for all $k \in
(a,b), 0 \leq a < b$. The basic uniqueness theorem for this problem belongs to
Ramm \cite{R603}. In this paper, a numerical method is given for solving this
problem and the numerical results are presented.
