Multitarget Position-Sensitivity Security Transmission with OAM-DM Based on FDA

Figure 9

The BER performance. Multitarget desired positions (d₀cosδ₀, δ₀, γ₀) are (50 m, 20°, 150°), (60 m, 20°, 40°), and (70 m, 20°, 120°), respectively. (a) The BER performance in desired range and azimuth angle. (b) The BER performance in desired range and elevation angle. (c) The BER performance in desired azimuth and elevation angles. (d) The BER performance under different SNRs.

(a)

(b)

(c)

(d)