Easy Guided Bombs Guidance Law

The guidance system is an important part of flight control system. Using theinformation of bomb and targets, it generates guidance signals to ensure the guidancebomb hit the targets along the required trajectory. Hence, it is valuable both in theory andapplication to study the guidance law.From engineering application, this paper proposes design approaches of guidance lawfor the engineering feasibility of guidance bomb. Firstly, Guidance and Control Modelbased on acceleration is established. After analysing several ordinary guidance law, thispaper determines to use proportional guidance as guidance law for guidance bomb in orderto satisfy the requirements of low cost and simply using. According to the property ofproportional guidance, this paper proposes to regulate the direction of Velocity vector bynormal acceleration, then form guidance law to guide the bomb towards the target.Secondly, theoretically, the impacts from disturbances such as vertical acceleration,acceleration of gravity,initial deviation angle to the normal acceleration are analysed toreveal the drawback of ordinary proportional guidance law. Finally, two revisedproportional guidance suitable for practical application are proposed based on theprinciples of improving terminal angle and normal acceleration...