Distributed State Estimation for Networked Spacecraft Thermal Experiments Over Sensor Networks With Randomly Varying Transmission Delays

Abstract

This paper investigates the distributed state estimation problem for spacecraft thermal experiments over sensor networks. The state estimators are designed in a distributed fashion to estimate the surplus temperature of the target node in the spacecraft. In particular, the randomly occurring time-varying sensor transmission delays are considered during the state estimation, which is more practical under networked environment. By employing the Lyapunov-Krasovskii functional approach, sufficient criteria are established and the desired distributed state estimator gains can be derived, such that the estimation error system can be asymptotically stable. Finally, the illustrative example is provided for demonstrating the effectiveness of the proposed method.

Keywords

• Distributed state estimation
• networked state estimation
• spacecraft thermal experiments
• randomly varying transmission delays