Study On Direction Finding Technology Of Array

Array direction finding technique is a commonly technique which is used to detectthe direction of arrival, and then locate the target effectively. For two research projects:" The multi-beam forming direction finding technology " and " The scheme of arrayshape optimization design ". This thesis which systematically analyse the array directionfinding technology, digital multi-beam forming algorithm and its hardwareimplementation of the basic principles and the specific process of the projectimplementation.The main work of this dissertation is based on the study of the array in precisedirection finding, the adaptive anti interference technology and its realization: Firstly,analyse the high resolution direction finding algorithms, such as Multiple SignalClassification (MUSIC) and Minimum Norm, adaptive interference orientation and antiinterference MUSIC and Capon algorithms are studied. And three phased arraysum-difference angle measurement algorithms, which are phased array amplitudecomparison approach, half subarray approach, direct weighting approach and theimplementation projects are discussed; In response to the study of spatial interference inreceiving the multi-beam direction finding system, the digital multi beam formingalgorithms is introduced. Finally, the platform of the array receiver in digital signalprocessing and the logic designing idea of Field Programmable Gate Array areintroduced. The hardware implementation of the anti interference system is studied, thehardware platform based on the Sample Matrix Inversion algorithm are given, and thefunction of each module are introduced.The system algorithm of design process and the engineering realization method areintroduced, which can be reference for array signal processing system.