BLIND DIRECTION OF ARRIVAL ESTIMATION OF COHERENT SOURCES USING MULTI-INVARIANCE PROPERTY
Xiaofei Zhang, Jun Yu, Gaopeng Feng, Dazhuan Xu · Electromagnetic waves · 2008
Blind direction of arrival (DOA) estimation algorithms of coherent sources using multi-invariance property is presented in this paper. ESPRIT-like algorithm in (23) can estimate DOA of coherent signal, but its performance is without satisfaction. We reconstruct the received signal to form data model with multi-invariance property, and then multi-invariance ESPRIT and multi-invariance MUSIC algorithms for coherent DOA estimation are proposed in this paper. Our proposed algorithms can resolve the DOAs of coherent signals. They have much better DOA estimation performance than ESPRIT- like algorithm. Meanwhile they identify more DOAs than ESPRIT-like algorithm. The simulation results demonstrate their validity.