  In this paper, we propose a protocol for angular displacement estimation
based upon orbital angular momentum coherent state and a SU(1,1)-SU(2) hybrid
interferometer. This interferometer consists of an optical parametric
amplifier, a beam splitter and reflection mirrors, hereon we use a quantum
detection strategy $\---$ balanced homodyne detection. The results indicate
that super-resolution and super-sensitivity can be realized with ideal
condition. Additionally, we study the impact of photon loss on the resolution
and the sensitivity, and the robustness of our protocol is also discussed.
Finally, we demonstrate the advantage of our protocol over SU(1,1) and
summarize the merits of orbital angular momentum-enhanced protocol.
