Abstract: A hybrid method and system is disclosed for determining a direction finding (DF) to a received radio frequency (RF) signal. The method employs a linear interferometer array to receive and measure electrical phase differences in a received RF signal. A closed form analysis of the phase differences produces a first integer solution to which the method adds a plurality of offset values to produce a corresponding plurality of offset integer solutions. The number of offset values is proportional to the length of the baseline of the antenna array. These offset integer solutions are evaluated based on their deviation from measured phase differences by the array. Of the first integer solution and the offset integer solutions, one solution is selected based on a minimum deviation from the measured phase differences. The selected solution is output to a higher level processor and further displayed to an operator as the correct DF solution.

Abstract: An antenna assembly may include an antenna array having a plurality of antenna elements generally arranged along an axis. The antenna array may include a first antenna element for receiving at least one signal from a signal source, and a second antenna element spaced a distance apart from the first antenna element for receiving the at least one signal from the signal source. The antenna assembly may also include a processor coupled with the antenna array for analyzing the at least one signal and utilizing the distance between the first antenna element and the second antenna element to determine at least one of a direction or a location of the signal source. The antenna assembly may further include a memory coupled with the processor for storing a correction factor, where the processor is configured to utilize the correction factor to determine the distance between the first antenna element and the second antenna element.