Analysis of Guidance Laws for Manouvering and Non-Manouvering Targets

Selection of guidance law is an important factor that affects the tactical performance of surface to air missiles. In order to select a suitable guidance law, a method of comparing the normal available acceleration with demanded or required acceleration is formulated. Two guidance laws i.e., proportional navigation guidance law (PNC) and augmented proportional navigation guidance law (APNC) are tested by this method. These guidance laws are studied by the comparison of normal available acceleration and demanded acceleration. In order to simulate the missile-target engagements for maneuvering and non maneuvering targets, a mathematical model is formed and then it is simulated in SIMULINK/MATLAB to carry out extensive simulations to analyze the PNG and APNG against maneuvering and non maneuvering targets. By observing the simulation results, it can be seen that PNG is suitable for non-maneuvering targets and it is incapable for maneuvering targets. However, the APNG is an optimal guidance law for maneuvering and non-maneuvering targets both.