Direction Finding Principles and Accuracy Contrast of Interferometer and MUISC
Qinghua Ren · Hangkong bingqi · 2012
In practical environment,there is usually only one signal in the band of the intermediate frequency module.Either MUSIC or the interferometer perform higher accuracy is an open problem for the case of single source.The principles of MUSIC and the interferometer are presented in the paper and the equations of the accuracy of the two methods are given and analyzed.The equivalency of the two methods in principle is proved for the case of single source and two-element array.Simulation results show that the interferometer has the same accuracy with MUSIC for the case of single source and two-element array and a little poor accuracy than MUSIC for the case of single source and multi-element array.The analysis is useful for the selection between the interferometer and MUSIC for direction finding in applications.