GNSS Interference Source Location Method Based on Multi-Terminal Detection Information

This paper proposes an algorithm based on the clustering of GNSS terminal location points and the fitting of circles with edge points for the problem of GNSS interference source localization. Based on the existing GNSS interference source localization algorithms, a large number of low-cost GNSS terminals are used. The number and approximate locations of interference sources are determined through clustering. For the non-boundary points of the detection area among the interference boundary points, the least-squares fitting method is used to calculate the center and radius of the circle, and the center of the circle is the estimated location of the interference source. Simulation experiments show that the localization algorithm based on boundary point fitting not only has high calculation accuracy, but also has good applicability to various densities of GNSS terminal points, various distribution forms of GNSS terminals, various interference radii, and various locations of interference sources.