中文摘要：

对精确末制导系统的若干实际问题进行了分析,考虑了影响脱靶量的主要因素：导引头信息处理延迟、导引头内部随机噪声以及导弹控制系统的响应限制。在线性时变末制导模型的基础上,采用状态空间伴随方法以及对末制导系统有限时间稳定性的分析,依次讨论了脱靶量对每一种因素的敏感度。在理论研究中常把这些问题看成是第二位的,但分析和仿真结果表明,它们是决定制导和控制设计参数的主导因素,在总体设计时必须对这些因素进行综合考虑。

英文摘要：

Practical design considerations, trade-offs and technology issues for precise terminal guidance systems were presented. Several major contributors to zero effort miss distance were discussed： seeker latencies caused by angular measure accuracy, seeker＇s stochastic noise, missile response limitations of control system and limited acceleration capability. A linear timevarying （LTV） model of the terminal phase of an intercept between a homing missile and a highly maneuverable target was derived. Based on the LTV model, the miss distance sensitivity to every factor was analyzed by the adjoint method in state space and finite-time circle criterion. These factors were often ignored in the theoretical study, but in practice, they are the major restrictions on the terminal guidance performance. The analysis and simulation results provide the feasible theoretical basis for the design of a homing guidance system.