The Subtle Characteristics Of The Radio Signal Analysis And Extraction

Individual communication transmitter identification is an important issue in the field of communication reconnaissance in recent years. With the characteristics reflected on signal by the difference of the transmitter hardware, this issue focuses on seeking the source of the received signal. So the transmitter tracking can be realized and a significant thread can be provided for the determination of communication network construction. The study on the fine signature of transmitter signal and distill the character of different communication transmitters are very important in the process of individual communication transmitter identification. With the basic theory and mechanism, the dissertation researching work is taken on the pulse fine signature of transmitter signal. A series of theoretically and practically valuable algorithms are studied and proposed, and the good performances of them are verified by simulation experiments with real data.The primary work in this dissertation:1. The definition of the individual transmitter character is introduced in this dissertation, i.e. only the universal, unique, stable and detectable characters of signal can be identified as the individual characters.2. Aiming at the different reflection on signal by the difference of hardware, the study of the fine signature of transmitter signal is executed based on the noise character, the spur character and the frequency character.3. The good performances of the algorithms were studied and proposed in this dissertation are verified by simulation experiments with real data.