积分比例导引制导是适用于全捷联半主动激光导引头的一种典型制导方案。为解决该制导方案下的命中精度分析问题, 提出了一种基于伴随法的精度分析方法。首先, 建立了积分比例导引制导律模型, 并给出了一种具有较强工程实用性的积分比例导引制导律实现方法; 其次, 在分析制导回路各项误差源特性的基础上, 利用伴随法得到了各误差源对脱靶量的影响。分析结果表明, 制导精度与比例导引导航比、自动驾驶仪的动态特性密切相关。得到的结论可以为工程上利用全捷联半主动激光导引头进行制导提供重要参考。

Integral proportional navigation law which can be applied to strapdown laser semi-active seeker is a kind of typical guidance law. In order to analyze the precision with this kind of guidance law, the analysis based on adjoints was put forward. Firstly, the model of integral proportion navigation guidance is constructed and the implement of the integral proportional navigation law was given. Secondly, based on the analysis of characteristic of different kind of error sources, the influence of these error sources with adjoints was got. The result shows that precision has a close correlation with navigation constant N and dynamic behavior of autopilot. These conclusions are significant for the application of the strapdown laser semi-active seeker in engineering.