Parameter Identification of Spacecraft Rendezvous under Non-cooperative Case

In this paper, the problem about parameter identification of spacecraft rendezvous under non-cooperative case is investigated. A new kind of identification method about continuous linear system is proposed. Firstly, linear transform algorithm and generalized bilinear transform algorithm as new discretization algorithms of continuous system are stated. According to these two algorithms, the parameters of continuous and discrete system can be connected by analytical way rather than approximate method, besides, their relationship is reversible. Then, by employing the MIMO recursive extended least squares algorithm, the spacecraft rendezvous system is identified. The simulation results show that the statistic errors of parameter following by two algorithms both converge to zero with the increase of the iteration steps and the latter algorithm has smaller parameter error.