Passive microwave direction finding with monobit fourier transformation receiver and matrix coupled antenna

The real time passive digital method of identifying both operating frequency and relative angular location of a distant source of microwave radio frequency radiant energy with respect to a receiving location, said method comprising the steps of:

• receiving, in multiple elements of a circular disposed omni directional microwave antenna located in said receiving location, multiple antenna element samples of energy radiated from said distant source of microwave radio frequency radiant energy;
• coupling electrical signals, generated by said received radiated energy in each of said circular disposed omni directional microwave antenna elements, through a mode forming electrical matrix to phase segregated multiple output ports of said mode forming electrical matrix;
• communicating each of said mode forming electrical matrix phase segregated multiple output port electrical signals to a separate real time monobit electronic warfare radio receiver of substantially unit value real time digital Fourier transformation Kernel function ⅇ - j2 ⁢ ⁢ π ⁢ ⁢ kn N
• realization and signal phase angle preserving characterization;
• determining, from real time digital Fourier transformation of said communicated phase segregated multiple output port electrical signal in one of said monobit electronic warfare radio receivers, a predominant signal frequency component of said energy radiated from said distant source of microwave radio frequency radiant energy;
• and
• ascertaining, from phase decoding of digital Fourier transformations of multiple of said communicated, phase segregated, multiple output port electrical signals in said electronic warfare radio receivers, an angle of arrival vector, with respect to said receiver location, from said energy radiated from said distant source of microwave radio frequency radiant energy.