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This paper focuses on unmanned aircraft guidance laws for a straight path and a circular orbit following using the vector field approach. The vector fields introduced in this paper can be applied to not only path following, but also other purposes such as arrival position, angle, and time control. Therefore, they could be applied to various missions providing advantages over other previous vector...
This paper presents a guidance law to operate intelligence, surveillance and reconnaissance missions using cooperative UAVs under known static threats. The guidance law is classified into three levels. In level 1 as the highest level, waypoints of UAVs are selected using different cost functions. In level 2, preliminary paths are generated using the A* algorithm for avoiding threats, and approaching...
A steering law design for single gimbal control moment gyros (CMGs) for spacecraft attitude control is addressed. The novel approach for the new steering law has a close relevance to the well-known singularity robustness method combined with the null motion approach. The proposed predicted singularity robustness (PSR) approach ultimately leads to an optimized solution of gimbal rates with performance...
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