Impact Time Control Guidance Law Considering Seeker’s Field-of-View Constraint Without Time-to-Go Information
Zhe Yang†, Defu Lin, and Luyao Zang
School of Aerospace Engineering, Beijing Institute of Technology
Zhong Guan Cun South Street, Haidian District, Beijing 10081, China
Accurate time-to-go estimation with large heading angle error is difficult for homing guidance laws, especially for the impact time control. Considering this, a new cooperative guidance law which requires no time-to-go estimation is investigated. First, the impact time control problem is transformed to the look angle command tracking problem. The look angle command guarantees that the range-to-go error converges to zero asymptotically. Then the proposed guidance law considering the seeker’s field-of-view constraint is derived using sliding mode control to track the desired look angle signal. Numerical simulations are performed to verify the effectiveness of the proposed guidance law for one-to-one and many-to-one engagement scenarios.
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