A study on hybrid networking system for distributed HF over-the-horizon radars

The hybrid networking system for distributed HF over-the-horizon radars is presented and analyzed in this paper, which includes two modes: the hybrid sky-surface wave system consisting of a sky wave transmitting path and a surface wave receiving path, and the surface wave system consisting of a surface transmitting path and a surface wave receiving path. The system will be used in remote monitoring wide area´s ocean dynamics parameters. Compared with the single mode radar system, this system has advantages of better detection performance at the far ranges and stronger anti-interference ability. The configuration of the hybrid networking system, the key problems and corresponding techniques are introduced. Preliminary results from field experiments show the technical feasibility and the good detection performance of the new radar networking system.