Sensor network analysis device, sensor network analysis method, and sensor network analysis program

摘要

PROBLEM TO BE SOLVED: To analyze the possibility that a bias error between sensors in a sensor network can be corrected.SOLUTION: A sensor network analyzer for observing one or more objects by N (N≥2) sensors is provided, comprising a matrix generation unit, a matrix calculation unit and an analysis unit. The matrix generation unit generates a Laplacian matrix L by L=D-A on the basis of a matrix A in which whether a sensor Sand a sensor S(j≠i) among the N sensors are both observing any object constitutes an element aand a diagonal matrix D consisting of a diagonal element dthat is the sum of elements in a direction in which j of the matrix A changes. The matrix calculation unit calculates the eigenvalues of the Laplacian matrix L. The analysis unit analyzes, from the number of zero eigenvalues (eigenvalue whose value is 0) or the second minimum eigenvalue (second smallest eigenvalue) of the Laplacian matrix L, the possibility that a bias error between sensors can be corrected.SELECTED DRAWING: Figure 1