Title :
Mutual coupling compensation using subspace fitting
Author :
Svantesson, Thomas
Author_Institution :
Dept. of Signals & Syst., Chalmers Univ. of Technol., Goteborg
Abstract :
The effects of an unknown mutual coupling is compensated for by estimating the coupling along with the direction of arrival (DOA) using a modified version of the noise subspace fitting (NSF) algorithm. It is possible to concentrate the NSF criterion regarding time coupling parameters, and the DOAs are obtained by a numerical search just as in the coupling free case. To evaluate the proposed method, the mutual coupling in a uniform linear array (ULA) of dipoles is calculated using fundamental electromagnetics. It is found that the effects of an unknown coupling can be reduced by estimating the coupling as well as the DOAs
Keywords :
array signal processing; dipole antenna arrays; direction-of-arrival estimation; electromagnetic coupling; electromagnetic induction; linear antenna arrays; DOA estimation; EM induction; dipole array; direction of arrival estimation; electromagnetics; modified noise subspace fitting algorithm; mutual coupling compensation; numerical search; time coupling parameters; uniform linear array; Antenna arrays; Antenna measurements; Data models; Dipole antennas; Direction of arrival estimation; Electromagnetic coupling; Impedance; Mutual coupling; Radar antennas; Voltage;
Conference_Titel :
Sensor Array and Multichannel Signal Processing Workshop. 2000. Proceedings of the 2000 IEEE
Conference_Location :
Cambridge, MA
Print_ISBN :
0-7803-6339-6
DOI :
10.1109/SAM.2000.878058
