Angle-tracking for two unresolved targets by high resolution spectrum analysis and pipeline technique

The missile seeker under consideration uses monopulse techniques measure the target angular displacements. When two unresolved targets are present, the target DOAs (direction of arrival) are extracted with large errors. A novel method is proposed which implements high resolution spectrum analysis and pipeline technique to extract the angular information correctly. Furthermore, the data rate of the DOA measurements is maintained. Therefore it gives a better tracking performance comparing with some classical methods.