Distributed time and frequency difference of arrival tracking in clutter

We consider passive surveillance using time and frequency difference of arrival signals received by mobile receiver pairs. Signals received by a pair of receivers are correlated in time and frequency, followed by a detection process. In addition to the target (emitter) measurements, we may also create a number of spurious detections in each scan. This paper considers local (distributed) tracking using these measurements, with the main purpose of eliminating spurious measurements and enhancing the emitter detection.