Abstract
Homing tactical missile is one of the most important guided weapons used for destroying the air targets. Proportional navigation (PN) had been proved to be an optimal guidance strategy for homing guided missiles. Due to its ease in implementation and its effectiveness against maneuvering and non-maneuvering targets, PN is receiving great attentions of many researches. This paper presents an investigation study using MATLAB for PN under different scenarios of missile-target engagement. The basic 2-D geometric of PN is first established. Then, modeling and simulating PN under the main sources of errors which include the missile initial heading error and target maneuver is carried out. Finally, the idea of time varying navigation gain (TVNG) and its impact on the enhancement of PN specially in the presence of noise in the tracking system will be introduced.