中末制导交班空间边界建立及影响因素分析

激光末制导迫弹中末制导交接段可靠交班是成功捕获目标的前提，针对交班空间的不确定性，研究该交班空间范围及相关影响因素对交班空间的影响特性.在构建6自由度弹道模型和干扰模型基础之上，分别从弹道约束、导引头作用距离、导引头视场角范围、修正能力等角度给出了交班空间需满足的约束条件.利用蒙特卡洛打靶仿真和线性插值拟合的方法，统计建立得出无控全干扰条件下交班空间边界作为基准交班空间，给出了时间、俯仰角、偏航角、射程、弹道高、侧向距离的界限范围.选取风、初速偏差、射角偏差为交班空间边界影响因素，仿真建立了无控且分别消除风、初速偏差、射角偏差状态下交班空间边界.结果表明，在主要影响因素中，风是影响交班空间边界的各因素中影响较大的因素.初速偏差主要对迫弹的交班时间、射程及弹道高影响较大.射角偏差增大了交班时间、射程的范围.从研究结果可知，激光末制导迫弹靶场射击时应尽量减小初速偏差、射角偏差，特别是选风速小的情况下射击.交班空间的建立也为制导迫弹开始激光末制导的时机提供判断准则，在弹体参数都满足交班空间条件下进行激光末制导才能保证弹丸准确命中目标. 

Boundary Establishment and Analysis of Influencing Factors in the Mid-End Guidance Transfer Space

Reliable handover of intermediate terminal guidance handover section of laser terminal guided mortar is a prerequisite for successfully capturing the target. In view of the uncertainty of shift handover space, the scope of the shift handover space and the influence of related factors on the shift handover space were studied. Firstly, based on the constructed trajectory model and jamming model with six degree of freedom, the constraint conditions of handover space were presented from the aspects, including the perspectives of ballistic constraint, seeker operating distance, field of seeker view angle and correction ability. Then, based on Monte Carlo shooting simulation and linear interpolation fitting method, a handover space boundary under the condition of uncontrolled full interference was established as the reference handover space, providing the limits of time, pitch angle, yaw angle, range, ballistic height and lateral distance. And the wind, initial velocity deviation and shooting angle deviation were selected as the influencing factors of space boundary. Through the simulation, the space boundary of shift handover was established under the condition of uncontrollable and eliminating wind, initial velocity deviation and shooting angle deviation respectively. Finally, simulation analysis was carried out. The results show that, among the main factors, wind is the most important one among the factors to have the influence on the spatial boundary of shift handover. The muzzle velocity deviation has great influence on the shift time, range and ballistic height of mortar ammunition. The deviation of firing angle can increase the shift time and range. According to the results, the muzzle velocity deviation and firing angle deviation should be reduced as far as possible, especially when the wind speed is small. In this paper, the establishment of the handover space can also provide the judgment criteria for the time when the guided mortar starts the laser terminal guidance. Only the laser terminal guidance works under the condition that the missile body parameters meet the handover space, the projectile can hit the target accurately.