figure1
    Figure 1: The SNR of the collective variable vs coupling strength gamma for the linear coupled systems. The parameters are alpha=1.0 , beta=0.5 , A=0.1, Omega=0.1.
figure2
    Figure 2: The SNR of the collective variable vs noise intensity for the case of gamma2zero (symbol star ) and gamma2infty (symbol diamond ). The SNR of the subsystems in the decoupled case are shown by symbols triangle and box . The parameters are tex2html_wrap_inline63=1.0 , tex2html_wrap_inline65=0.5 , A=0.1, tex2html_wrap_inline69=0.1.