Angle of arrival performance bounds in an interfering environment

Given an antenna array with controllable complex weights, the number of antenna ports is a variable that impacts cost and bulk very significantly. For N array elements, it is desirable to assess the performance margin between a full N-port system and one with a smaller number of ports. In this paper we compare the angle of arrival measurement performance bound of the N-port to that of a two port (monopulse). In addition the results show that a proposed monopulse with weights varying according to Applebaum´s Control Law(1) constitutes a useful system in an interfering environment.