In 2004, Peter Davenport proposed a method to to build a UFO detection system utilizing passive radar, and presented his ideas in the MUFON UFO Journal. Now, almost 20 years later, Mitch Randall, working with the Galileo Project at Harvard, has built a working prototype and proven the concept.
The next step is to secure funding to produce a commercially available unit that anyone can buy and install. When at least 3 of these systems are deployed in any given area, what Mitch calls Objects Outside the Paradigm of Science (or OOPS), can be detected. These are craft that can make instantaneous non-inertial right angle turns at high velocities, something which many UFO’s have been observed to do (some cases of which have been confirmed on standard radar). No human made object is capable of maneuvering like this. If a network of passive radar receivers could be widely deployed, the smoking gun for proving non-human built craft exist could finally be in the hands of the general public.
Video overview of the project and the technology behind it: