Diagnostics and stabilization of multimode nonlinear radio physics systems

The diagnostics method for multimode nonlinear radiophysical systems with chaotic dynamics based on the multimode models is offered. It is shown that quasi-resonance and inertial controlling influence on the system's parameters can ensure the dominance of necessary chaotic or regular behavior mode of multimode nonlinear radio physics systems. A new approach in diagnostics of gas discharge plasma condition on the bases of generalized multimode model was offered. This diagnostic was made on the bases of analyses of absolute and dissipative terms of generalized oscillators of multimode model which taking into account the nonlinearity of gas discharge plasma.