Eliminating inter-carrier interference and time-compression distortion in hypersonic aerospace vehicles.
At Mach 3, Doppler scaling distorts symbol duration across the signal bandwidth. Fractional Fourier Transform (FrFT) matched filters rotate signal energy into optimal fractional domains, recovering orthogonality.
By modulating sub-THz carrier frequencies above the plasma critical frequency (140 GHz), communications and radar pulses penetrate ionized shock layers during atmospheric re-entry.
Simulated hypersonic sled runs confirmed continuous 99.999% telemetry packet recovery and sub-meter target tracking at relative closing speeds of 3,800 km/h.