突击作战干扰时机决策

Decision making of jamming time in air fighter's penetration attack

干扰时机的确定是进行干扰决策的前提和基础。通过对问题分析,制定了两套干扰时机决策方案。为实现攻击机的飞行控制最优规划,综合考虑攻击机飞行性能、威胁约束以及边界约束,建立了最优航迹控制模型。引入主要应用于航天控制的勒让德伪谱法(Legendre pseudospectral method,LPM),将最优控制问题转化为非线性规划(nonlinear programming,NLP)问题,在此基础上设计了干扰时机解算流程。通过对基于c代码的可行序列二次规划(c code feasible sequential quadratic programming,CFSQP)算法的改进,有效减少了优化变量的数量,使其能对NLP问题快速寻优。仿真结果表明,所提出的干扰时机决策方案能有效地获得最优干扰开始和结束时刻。

The calculation of jamming time is the prerequisite and basis for making jamming decision. First- ly, two schemes are designed after analyzing the problem. Secondly, in order to realize an air fighter＇s optimal flying control planning, the flying capability, threat constraints and flying border constraints are considered, based on which the optimal path control model is built. Thirdly, by introducing a Legendre pseudospectral method （LPM） which is mainly used in spaceflight control field, the optimal control problem is transformed into a nonlinear programming （NLP） problem, and then the calculating flow of the jamming time is designed. Fourthly, through improving the c code feasible sequential quadratic programming （CFSQP） algorithm, the op- timal results of the NLP problem can be quickly searched. Finally, simulation studies show that the scheme can get the optimal start and end time of jamming.