Research On The Robust DOA Estimation Algorithms Of Coherent Signals

The DOA (Direction Of Arrival) estimation of coherent signals is a research hotspot and important research subject of array signal processing, it is also one of the basic task of radar, sonar, communication, seismology, radio astronomy areas and so on. At first, the research background and the significant of the subject, the research development and productions of the DOA estimation of coherent signals are introduced. At the same time, the array data model of the narrow-band coherent signals is proposed. And then combining with the practical environment, ordinal DOA estimation algorithms of coherent signals under nonstationary noise, coherent sources estimation under array coupling and algorithm based on Neural Network are studied, with the springboard of lower computation, the algorithms try their best to improve estimation performance and ability of over-loading, meanwhile, the availability of the proposed algorithms are verified through the computer simulation. Finally, the work of this dissertation is summarized, and then the technology of the DOA estimation of the coherent signals is predicted.