Does the Observability at Infinity of Descriptor Linear System Guarantee all Impulses Observable?
【摘要】：正 The order of impulse is introduced. If there exists an unobservable impulsive solution to the descriptor linear system,then there exists an unobservable impulsive solution of order zero. This result is exactly what is needed to interpret the relation between two existing concepts, observability at infinity and impulse observability. Also, a clearer definition to the impulse observability is given.