Fast TDOA and FDOA Estimation for Coherent Pulse Signals

Time difference of arrival (TDOA) and frequency (FDOA) have been widely used for localizing temporally continuous signals passively. Temporal sparsity pulse makes their TDOA FDOA estimation processes much different, computational complexity is a major concern in this area. This paper addresses the problem fast focuses mainly on narrowband coherent pulses. By decoupling effects cost function localization approximately, we propose coarse method. The estimates are then refined with cross-ambiguity (CAF) algorithm within small neighborhood. In simulations, proposed method demonstrated to satisfying precisions, it exceeds existing counterparts largely efficiency.