Improving Elevation Angle Resolution with a 77 GHz FMCW Bistatic Radar

In this paper, a trilateration-based technique for enhancing elevation angle resolution using a 77 GHz FMCW bistatic radar configuration that requires only a few antennas is proposed. The setup involves placing two radar nodes at a considerable spatial distance above each other. The efficacy of the proposed approach is evaluated by simulations using a simple one-ray model, and then by measurements using two radar evaluation boards. The findings indicate that the proposed bistatic system offers superior elevation angle resolution in short-range scenarios compared to traditional monostatic radars, while keeping the setup simple and low in complexity.