System observabilitymatrix was derived, and the degree of observability was calculated. Relative motion states of non-cooperative space target were estimated through unscented Kalman filter (UKF).
The observability of linear timeinvariant dynamic system can be obtained by the analysis of the observable matrix, but it can not give the observability.
对于线性系统,其可观测性可通过对可观测性矩阵的分析获得,但并不能求出系统的观测度。
3
In addition a speedy observability analysis method based on nodal adjacent matrix is put forward.