Angle-Based Sensor Network Localization

This article studies angle-based sensor network localization (ASNL) in a plane, which is to determine locations of all sensors network, given partial (called anchors) and angle measurements obtained the local coordinate frame each sensor. First, it shown that framework with nondegenerate bilateration ordering must be fixable, implying can uniquely determined by angles between edges up translations, rotations, reflections, uniform scaling. Then, ASNL proved have unique solution if only grounded fixable anchors are not collinear. Subsequently, solved centralized distributed settings, respectively. The formulated as rank-constrained semidefinite program (SDP) either noise-free or noisy scenario, decomposition approach proposed deal large-scale ASNL. protocol for designed based on intersensor communications. Graphical conditions equivalence SDP linear SDP, well effectiveness protocol, proposed, Finally, simulation examples demonstrate our theoretical results.