The method for radar signal recognition

Abstract
One of the principal functions of the ESM/ELINT system is gathering basic information from entire electromagnetic spectrum and its analysis. In most cases, based only on primary features of incoming radar signals, the modern electronic intelligence system cannot recognize the different devices of the same type or class. The radar signal is the source of information about recognized object, which is propagated into surrounding environment. Radar emitter identification based on a collection of received radar signals is a subject of wide interest in both civil and military applications. To classify radar emitters in the surrounding environment we need to explore the detailed structure inside each pulse. An emitter has its own electrical signal structure inside each of its transmitted pulses due to both intentional and unintentional modulations. It is very difficult work to perfectly employ a microwave sensors in the combat identification, because it is a composite task that involves pulse measurements, features extraction, normalization, selection, classification (recognition) and verification.