Abstract：The design of guidance law is critical in the interception system. The accuracy of the commonly used variable structure guidance law decreases while intercepting complex manoeuvring targets, and chattering occurs frequently. This paper has proposed a guidance law design method based on near-end strategy optimization. The guidance problem of intercepting manoeuvring targets was abstracted as a Markov decision process, and a reward function evaluating miss distance and line-of-sight angular rate chattering was applied. Comparative experiments show that the interception effect of the guidance law based on near-end strategy optimization and continuous output performs more effectively and can successfully restrain the chattering phenomenon in the sliding mode guidance law, thus providing a significant research prospect and potential application value.
