Viterbi-Based Trajectory Estimation with Widely Spaced Receiving Radar Antennas

In this work, a precise radar-based localization system relying on widely spaced receiving antennas is introduced. The linear frequency-modulated continuous-wave principle is used, where partial convolution of the analytic radar data sets in the spectral domain is performed for distance estimation, while for angle estimation partial correlation is used. To achieve high localization accuracy, we use Viterbi decoders that compute the most likely sequence of positions associated with the observed radar data sets, thereby combining frequency and phase evaluation to avoid ambiguities. Experiments show that the introduced method allows a precise and robust estimation of the target's trajectory.