Study Of Monopulse Three Dimensional Imaging And Angular Tracking In High Speed

Precise navigation of radar is detecting targets using electromagnetic wave which is radiated to or reflected to missile by targets, and get high precise location information of targets, including distance,angle,speed,figure,geometry configuration and so on. Three-dimensional imaging of radar has important application perspective in the fields of precise navigation. Monopulse radar 3-D techniques and angle glint suppression has been developed in the thesis.The study of radar seeker is an important part of precise navigation of radar. Missile is a powerful attack weapon. When one side launches a missile to attack the other side, the attacked side launches an interception missile to destroy it. So it becomes very important to study the jam against the interception missile. Towed decoy is one kind of simple and effective jam against interception missiles and is cared due to the low cost. This dissertation is focused on the research of towed decoy against radar seeker of the interception missile. So the thesis emphasize on angular tracking of radar seeker and towed decoy against radar seeker of the interception missile are.In chapter 1, the background, significance, history and status in quo of 3-D imaging and angular tracking are introduced.In chapter 2, the methods of ISAR imaging based on stretch signal and monopulse imaging are presented.In chapter 3, Two methods of angular glint suppression are introduced, one based on the high resolution profile, the other based on frequency agility. Frequency agility technique can get rid of the relativity between border upon echo pulses, and angle glint is suppressed effectively.In chapter 4, In this dissertation, the theory of radar seeker of interception missile is firstly given, secondly, interception missile trail model, target trail model, target echo model, radar signal processing model, guiding model and so on are established, based on these models the radar seeker system without the jam is simulated. On the basis of these, decoy trail model is set up, and the process of the interception missile intercepting the attack missile is studied with the jam of towed decoys.