3D models are essential components of augmented reality (AR). However a literature review of AR applications shows important shortcomings about 3D model interoperability (property of information/data to be exchanged). Lack of proper data structure and management strategy could cause substantial data loss and disability of AR systems to share a common perception of the real world. Correspondingly, studies on AR applications and existing 3D models state that consistent integration of AR systems is not achievable unless the process of modeling is formulated regarding real world and associated representations with respect to AR requirements. Accordingly, this research proposes meta-modeling as modus operandi to codify the required aspects of AR systems and the corresponding perception of world, and associate models with respect to each other. This paper presents this new meta-model and exposes some examples of its manipulation to improve the ability of designing better inter-operable AR applications.