Guidance system design for deeply-strapdown miniature munitions

A novel deeply strapdown guidance control (DSGC) framework based on strapdown seeker and strapdown inertial measurement unit was presented for miniature guided munitions applied to UAV, soldier shoulder and other platforms. Due to that there was no available guidance information of DSGC, the theoretic transform equations based on missile-target geometric relationship and roll-stabilized simplified equations were introduced, then a nonlinear differentiator was proposed for stable digital angular rate calculation. A PI compensated two-loop acceleration autopilot was presented as the inner loop of guidance system. The trajectory simulation for UAV platform and soldier shoulder was analyzed, respectively. The results showed that the DSGC technology was a well solution for the precisely guided miniature munitions especially the short-range. Wherein, the multiple-constraints design for guidance control system was the critical factor for application.