Multipath Viterbi data association algorithm for over-the-horizon-radar

Target tracking of over-the-horizon-radar (OTHR) inevitably faces the problem of multiple propagation modes, low detection probabilities, low measurement accuracy and low data-sampling rate. A multipath viterbi data association (MVDA) algorithm is proposed, through modeling target movement in ground coordinate and implementing data association in radar coordinate so that Viterbi data association (VDA) is extended from association between measurement and track to association among measurement, propagation mode and track. The simulation results show that MVDA is superior to VDA and multipath probability data association (MPDA).