Multistatic Target Tracking for Non-Cooperative Illuminating by DAB/DVB-T
Martina Daun, Wolfgang Koch · OCEANS 2007 - Europe · 2007
Digital Audio/Video Broadcasting (DAB/DVB-T) [1] is already available in a large area. The advantage of using these signals for passive air surveillance is the disposability of a large range of illuminators sending an easily decodeable digital broadcast signal. In the considered multi-static scenario, one observer provides bistatic Time Difference of Arrival (TDoA) and Doppler measurements. To build a 3D multi-target tracker, information of different illuminators has to be fused. The main task is to handle ghosts, which arise due to the association problems between illuminators, targets and measurements. For real-time applications the runtime of the algorithm is another important issue. As a solution, we present a Multi Hypothesis Tracking (MHT) filter working on different stages. The first stage includes a primary tracking directly on the measurements; the second stage works on 2D-estimates and addresses the association problem; the final stage yields 3D information. Numerical results will include performance analysis via Monte-Carlo simulations and comparison to the trace of the covariance matrix. Estimation errors in the x/y-plane and height will be considered separately.