SIGNAL SOURCE LOCATION DETERMINE METHOD USING EARTH RADIUS AND SIGNAL DIRECTIONAL INFORMATION

摘要

A signal source location determining method using earth curvature and signal directional information of the present invention is capable of: removing a distortion which may be generated in the case of using a triangulation manner in a plane orthogonal coordinates system by reflecting the earth curvature and estimating a location of a signal source, when the location of the signal source is estimated by using a movement sensor signal source or a plurality of fixed sensor signal sources (200, ..., 240); and removing a process of projecting a triangulation result to a three-dimensional earth curved surface, thereby improving both location estimation accuracy and computation necessary for the location estimation. Specifically, as the characteristic of determining convergence speed of a location estimation value according to an initial value when the location is estimated is utilized by more quickly and exactly calculating an estimation value of an initial location with two direction estimation values which use orthogonality of a direction vector, the last location estimation value is more is more simply and quickly extracted. Moreover, the present invention has a feature of securing stable performance by adjusting an excessive correction value in estimating the location, not to make an estimation value diverged.;COPYRIGHT KIPO 2015