DOA Estimation Considering Mutual Coupling with Fractal Based Array Using Model Based Approach

摘要

The performance of DOA estimation majorly depends on array geometry, SNR and use of Adaptive algorithm. Mutual coupling between the elements has adverse effect on DOA estimation. The sparse array such as MRA (minimum redundancy array), NA (Nested Array), CA (Co-prime Array) gives better accuracy with reduced mutual coupling as compared to ULA. But these sparse arrays are applicable with an assumption of perfect knowledge of signal co-variance matrix. This paper deals with fractal based antenna array optimization using model based approach considering mutual coupling.