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Xiangxiang Li, Wanchun Chen, Zhongyuan Chen, Ting Wang and Heng Shi
A fixed-time nonlinear circular guidance law that satisfies the impact time constraint is proposed. By utilizing the geometric principle that the length of a circular arc connecting the missile and the target can be analytically calculated, the exact exp...
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Shuai Ma, Zhongyuan Wang, Xugang Wang and Qi Chen
The problem of three-dimensional impact time control guidance considering field-of-view constraints and time-varying velocity is investigated in this study. First, considering the effect of gravity and aerodynamic forces on velocity, a simplified numeric...
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John Day, Reed Goodman, Zhongyuan Chen, Rachael Hunter, Liviu Giosan and Yanna Wang
Due to increasing water use, diversion and salinization, along with subsidence and sea-level rise, deltas in arid regions are shrinking worldwide. Some of the most ecologically important arid deltas include the Colorado, Indus, Nile, and Tigris-Euphrates...
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