考虑导引头视场角的仿生分段复合制导律研究

Due to the weight limit of the loadable load, the micro-miniature ammunition often uses the strap-down seeker. At the end of the ammunition attack, a small field of view angle is required to ensure effective tracking and striking of the target. In nature, the tracking strategy and trajectory of the predatory fruit fly can provide reference. Based on the tracking strategy of the dragonfly, the segmentation guidance law was proposed, that is, the initial segment would quickly adjust the ammunition posture into the tail chase mode when tracking the target, and capture the target using the motion camouflage tracking strategy in the latter half of the tracking. In the initial guidance section, the parallax angle was controlled by the sliding mode control law to adjust the ammunition to the tail-following attitude. The final guidance section used the motion camouflage guidance law with the focus at infinity for target tracking, and between the initial guidance section and the final guidance section. The second-order smooth interface law was used for the transition. The simulation results of the bionic segmentation composite guidance law show that compared with the traditional proportional guidance law, the required overload of the ammunition in the final guidance section is small, and the target is closer to the center of the field of view, which can reduce the ammunition in the final guidance section. The overload and the field of view of the seeker can be used to effectively improve the attack accuracy.