Localizability exploration of sensor network

We propose a group of localizable conditions for two sets of nodes. The localizable conditions need to answer two questions: how many edges and where these edges are placed between two sets of nodes. Here, each set of nodes and their internal connections are modeled as a distance graph. The localizability exploration between two sets of nodes is characterized by the global rigidity test of two merging graphs. A series of necessary and sufficient conditions on thelocalizability of two merging graphs is given