A new direction finding method with unknown sensor gain and phase

In this paper we present an original subspace-based method for direction finding by an array of uncalibrated isotropie sensors. This iterative method has been developed in order to estimate both directions-of-arrival of non circular radiating signal sources and unknown gain and phase of sensors. The non circular sources assumption leads to an extended array data model. One of the benefits of this approach is that the proposed procedure works even in the case when the number of sources is larger than the number of sensors. Some computer simulation results are provided to illustrate the performance of the algorithm.