Radio frequency (RF) signals that may be received by an RF receiving device may be difficult to detect for various reasons. The signal may be a low power or low amplitude signal. There may also be noise associated with the desired signals that may make the desired signal difficult to detect. For example, the amplitude or power of the desired signal or information signal may be below the level of the noise. A current system for detecting low power or amplitude signals uses phased array antennas; however, the phased array antennas need to be used for detection with maximum gain achieved along a single angle of arrival. Accordingly, the angle of arrival has to be known or selected a priori. Because current systems employee phase shifting and summing prior to the digitization of the signal, only one angle of arrival will realize the maximum gain. This requires phased array antennas to be scanned either physically or electronically. Another solution may be to digitally sample the signals received by each antenna and have banks of phase summing processors that produce maximum gain signals for a multiplicity of specified angles of arrival. This solution has a significant cost and may be impractical in most applications, particularly where weight and computing capacity need to be economized.