Zhao Zhimin

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A novel spatial phase-shifting method using moiré phenomena is presented. According to our analysis of moiré patterns on the base of scalar diffraction theory there is stable phase shift between fringe patterns of different order filtering. This phase shift is the stric value of   and   and just depend on the distance between two gratings and the period(More)
This paper establishes a more general continuous time swarm model with N-member. It takes the time delay and disturbances into account. We proved that the swarm members will converge and form a cohesive cluster around the center in a finite time in the presence of communication delays and disturbances. Moreover, we consider the multi-modal gaussian-type(More)
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