Design of Robust Guidance Law for SINS/GPS Guided Bomb

Based on the characteristic and requirements for techniques and tactics of the SINS/GPS guided bomb,a robust guidance law which meets the L2-gain and constraint of falling angle is designed.The guidance law aims to keep the line-of-sight angle stable,and it has several advantages,such as simple state variables,not requiring velocity of the bomb controllable,easy solution,and convenient engineering application.And then two worse condition simulations of 6-DOF are carried out.The results indicated that the guidance law is robust and it can also constrain the falling angle effectively though the external interferences and model uncertainties exist.And the attack area is enlarged as well.