Method and system for estimating the number of sources that are incident on a network of sensors, by estimation of the statistics of the noise.

摘要

Method and system for determining the number of incident light sources in a network including c. sensors receiving n observations characterized in that it comprises at least the following steps: calculating the matrix b and of its eigenvalues {λ1,.., λn} obtained from a signal received on c sensors, filing of {λ1,.., λn} in order to obtain λ1 ≥.. ≥ λn, initialization of i, i = m + 1 and i = i - 1 calculating the average and standard deviation of the eigenvalues of noise: calculating the average of the n - i smallest eigenvalues of the matrix b, the calculation of the standard deviation of the n - i smallest eigenvalues of the matrix b if λ1 av + ησ then this value, which belongs to the space signal and the number of sources present in the mixture is equal to i, where η is a threshold, which makes it possible to control the probability of false alarm if λ1 av + ησ, this value, which belongs to the space noise, repeat the steps.