Title :
Optimum Placement of DF Antenna Elements for Accurate DOA Estimation in a Harsh Platform Environment
Author :
Byun, Gangil ; Hosung Choo ; Hao Ling
Author_Institution :
Dept. of Electron. & Comput. Eng., Hanyang Univ., Seoul, South Korea
Abstract :
This paper presents a systematic approach to the optimum placement of direction finding (DF) antennas in a harsh platform environment. A circular array with omni-directional elements is considered for azimuthal direction of arrival (DOA) estimation based on the multiple signal classification (MUSIC) algorithm. The element positions are optimized by the use of a genetic algorithm (GA) in conjunction with the FEKO electromagnetic simulator. The proposed approach is first tested with a generic platform shape. It is then extended to a more realistic military aircraft model with a strong scattering object. The optimized results show a significant performance improvement over the uniform circular array in both platform environments.
Keywords :
antenna arrays; direction-of-arrival estimation; genetic algorithms; omnidirectional antennas; radio direction-finding; signal classification; DF antenna element; FEKO electromagnetic simulator; GA; MUSIC algorithm; azimuthal DOA estimation; azimuthal direction-of-arrival estimation; circular array; direction finding antenna; genetic algorithm; harsh platform environment; military aircraft model; multiple-signal classification algorithm; omnidirectional elements; optimum placement; scattering object; Antenna placement; direction finding (DF) antenna; direction of arrival (DOA) estimation; genetic algorithm; multiple signal classification (MUSIC) algorithm; platform effect;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2013.2269132