Abstract:

In view of the polarization diversity of conformal array antennas, the array manifold model for conical conformal array is established. With the help of special element arrangement, the spatial smoothing technology in conical conformal array antenna is developed, and the parameters pairing method of estimation of signal parameters via rotational invariance techniques (ESPRIT) is given when direction of arrival (DOA) of multiple sources are estimated. On this basis, a blind DOA estimation algorithm of coherent sources for conical conformal array antenna with respect to polarization diversity is proposed, and it realizes the high resolution DOA estimation of coherent sources using the singly curved surface of conical conformal carrier and the special requirement of ESPRIT algorithm. Monte Carlo simulation results are provided to demonstrate the effectiveness and behavior of the proposed method.