摘要
Abstract
Considering the application limitations of traditional three-point guidance under the motion state of guidance station,a dynamic three-point guidance law based on maneuver detection of guidance station was derived.By establishing radar coordinate system,the elevation angle,azimuth angle and their change rates for the missile and target relative to the guidance station were derived,and the angular-rate error terms caused by the movement of guidance station were provided.Based on the guidance principle of three-point method,the error term was transformed through equation manipulation to derive the change relationship between guidance-station pitch-direction velocity,missile velocity,trajectory inclination angle and elevation angle rate.Similarly,the same applies to the yaw direction,resulting in two binary quadratic equations.Solving these equations,the desired trajectory-inclination-angle and trajectory-deviation-angle were obtained.By calculating the difference between the desired and actual values,a compensating term was constructed using the difference in elevation angle or azimuth angle relative to the guidance station between the missile and the target,forming overload feedback dual-power guidance law.According to the deduced guidance law,the application scenario of the three-point method of moving base was extended,and the trajectory simulation and analysis of multi-condition were carried out.The results indicate that the missile hits the target while the guidance station is in motion.The moving guidance station,missile and moving target are always aligned on a straight line.Both the trajectory inclination angle and trajectory deviation angle converge to the desired values,strictly adhering to the three-point guidance law.The motion of the guidance station leads to a decrease in hit accuracy.Controlling the guidance-station speed appropriately or reducing the missile-range requirement can improve the hit probability.关键词
导弹/三点法/动基座/导引规律/弹道仿真Key words
missile/three-point method/moving base/guidance law/trajectory simulation分类
军事科技
