论文部分内容阅读
针对单一寻的飞行器在具有探测干扰屏障的制导场景中难以精确探测目标的问题,提出一种新型分体式制导策略。该策略采用两个飞行器分别完成对目标的观测与拦截,二者通过合理的信息交互与轨迹配合,从而令拦截器能够间接获取高精度制导信息。首先对分体式制导策略进行数学描述,建立分体相对运动模型和探测模型;然后将拦截器与目标间相对运动状态估计的Cramer-Rao下界作为探测性能指标并进行理论分析,从而指出观测轨迹是提高目标探测性能的关键因素;进而综合考虑目标探测性能与观察器的燃料消耗,将观测轨迹设计问题描述成一个动态多目标优化问题,并给出一种分解优化算法以提高求解效率;最后,仿真飞行算例验证了分体式制导策略的有效性。
Aiming at the problem that it is difficult to detect the target precisely in the guidance scene with single obstacle detection obstacle, a new split guidance strategy is proposed. The strategy uses two aircraft to complete the observation and interception of the target respectively. Both of them cooperate with the trajectory through reasonable information interaction so that the interceptor can obtain the high-precision guidance information indirectly. First, the split guidance strategy is described mathematically to establish the split relative motion model and the detection model. Then, the Cramer-Rao lower bound of interceptor and target relative motion estimation is used as the detection performance index and the theoretical analysis is made. And then consider the target detection performance and observer fuel consumption, describe the trajectory design problem as a dynamic multi-objective optimization problem, and give a decomposition and optimization algorithm to improve the efficiency of the solution. Finally, Simulation flight examples demonstrate the effectiveness of the split guidance strategy.