Joint Delay Doppler Probability Density Functions for Air-to-Air Channels

Figure 4

Scenario III for aircraft positions of 𝐱_𝑡0=[−1175,0,600]^𝑇 m and 𝐱_𝑟0=[1175,0,600]^𝑇 m and velocity vectors of 𝐯_𝑡=−𝐯_𝑟=[70,0,0]^𝑇 m/s. The aircraft fly in opposite directions; homogeneous scattering occurs all over the ground.

(a) Joint delay Doppler pdf 𝑝(𝑡;𝜏,𝑓_𝑑)

(b) Doppler pdf 𝑝(𝑡;𝑓_𝑑∣𝜏) at 𝑡=0 s for the different delays indicated in (a)