Association algorithm with bearing-only measurements in 3-Dimensional space

In this paper, a new method is studied to associate the bearing measurements of different passive sensors. This method uses multi-dimension assignment algorithm for reference, and the nearest-neighbor method is combined with the holistic correlation method to reduce the dimension of bearing measurements association. Then, the chi-square test is used to associate the bearing measurements. Compared with the classical methods, this method can eliminate false intersection points more quickly and correctly. Simulation results show that using the method proposed in this paper passive sensors can locate multiple targets at the same time, and the computation burden is moderate.