Research Article

Indoor Operations by FMCW Millimeter Wave SAR Onboard Small UAS: A Simulation Approach

Figure 5

2D geometry: example of rays intercepted by receiving antenna. Transmitting and receiving antennas are oriented towards the bottom-right corner and gray circle shows their location. Blue dotted and red dashed rays indicate the borders of transmitted beam, whereas inner rays are depicted in black. The energy is reflected back to both the antenna and the top-left corner: some rays hit the antennas, and hence they are not propagated towards the top-left side of the grid (transparent area). The figure represents a detail of the total grid.