The Design of Airborne Dispenser's Variable Structure Guidance Law

Airborne dispenser adopts SINS/GPS integrated navigation system. That integrated navigation system can real-time supply position and velocity. The line-of-sight (LOS) angle and line-of-sight angular rate can be calculated according to the message that supplied by the integrated navigation system. Applying variable structure guidance law, based on the LOS angle and the LOS angular rate, the dispenser can reach the open-cabin-point upon the target with right pitch and trajectory dip angle, and cast sub-projectile. The all trajectory mathematical simulation under all kinds of disturbing is finished by the dispenser dynamic model and applying variable structure guidance law. The simulation showed that the dispenser adopting this guidance law can reach the open-cabin-point with right pitch and trajectory dip angle, and this guidance law has strong anti-disturbing performance.