Angle estimation for two unresolved Swerling I targets in monopulse radar

Most methods of angular estimation for unresolved targets are based on Swerling II targets model. These methods rely upon the use of pulse-to-pulse frequency agility. In this paper we consider the case that the fluctuation of targets observed are slow, research how the RCS fluctuation of targets affects monopulse radar system and then we address a method of resolving two unresolved targets based on the statistical feature of monopulse angular estimation for slow fluctuation targets. The result of simulation demonstrates that this method is effective.