  Shah and Abdullah [Complex Analysis Operator Theory, 9 (2015), 1589-1608]
have introduced a generalized notion of nonuniform multiresolution analysis
(NUMRA) on local field $K$ of positive characteristic in which the translation
set $\Lambda$ acting on the scaling function to generate the core space $V_{0}$
is no longer a group, but is the union of ${\mathcal Z}$ and a translate of
${\mathcal Z}$, given by $\Lambda=\left\{0,u(r)/N \right\}+{\mathcal Z}$, where
$N \ge 1$ is an integer and $r$ is an odd integer such that $r$ and $N$ are
relatively prime, and ${\mathcal Z}=\{u(n): n\in\mathbb N_{0}\}$ is a complete
list of distinct cosets of the unit disc $\mathfrak D$ in $K^+.$ In this paper,
we focus on the extension of nonuniform continuous wavelets to the construction
of $J^{\text{th}}$-stage nonuniform discrete wavelets on local fields. We
establish some general characterizations for the $J^{\text{th}}$-stage
nonuniform discrete wavelet systems to be orthornormal bases in $L^2(\Lambda)$.
Moreover, we establish a relation between the continuous wavelets of $L^2(K)$
and their discrete counterparts of $l^2(\Lambda)$.
