ROOT MAP CHARACTERIZATION OF INTERFERENCE LOCATION IN A WIDE APERTURE ANTENNA ARRAY.
This paper demonstrates the utility of the root map (RM), commonly used for two-dimensional filter stability test, as applied to the weights of an adaptive rectilinear antenna array to estimate interference direction-of-arrival. Contrary to the adaptive pattern, the cancellation pattern root map is shown to possess separate properties which allow accurate location of a single interference. One major advantage of the RM method is that it requires fewer sample points than scanning-based algorithms yet realizes superior resolution. Another major advantage is that the RM method remains highly robust both with low SNR and with steering vector (pointing) errors.
|Main Author:||O'Rourke, John F.|
|Other Authors:||Amin, Moeness G.|