Interference Suppression Using Knowledge Aided Subarray Pattern Synthesis
Abstract
Phased array systems typically subarray many antenna elements into far fewer digitized channels, to the point where just one subarray may theoretically have many more spatial degrees of freedom DOF than digital DOF afforded from the number of digitized channels, C. More DOF yields better performance, but adding more channels drives system cost and data throughput requirements. DOF within the subarrays could be designed to mitigate selected interference signals at the subarray pattern stage if the antenna manifold and the angle of arrival AOA of interference sources are known. A jammers AOA can be derived from additional knowledge sources and/or algorithmic processing of the channel data. Simulations are used to illustrate important implementation trades and a notional concept of operation for dividing spatial nulling duties between real and digital beamformers.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 24, 2016
- Accession Number
- AD1053858
Entities
People
- David A. New
Organizations
- Air Force Institute of Technology