Analysis about Output of Multipath Incidence Cluster Array Antenna and Its Direction-measured Errors
DU Hui-ping · Journal of North China Institute of Water Conservancy and Hydroelectric Power · 2008
The estimation of Direction-of-Arrival(DOA) of a cluster of incident multipath signals is discussed,where the signals are treated as a single one by the array to present a visual direction.The differences between the auto-correlation matrixes of the array output in various cases are compared to reduce the main factors which make the visual direction departing from the central direction of the actual cluster.With definitions of the main error angle and the RMS error angle spread between the visual and central directions of the multipath cluster,the estimation results are numerically evaluated and compared.The different impacts on the estimation of DOA are concluded.