Long-distance multistatic aircraft tracking with VHF frequency doppler effect. - Piotr Ptak; Juha Hartikka; Mauno Ritola; Tuomo Kauranne (IEEE Trans. Aerosp. Electron. Syst., 2014)

Aircraft classification based on radar cross section of long-range trajectories. - Piotr Ptak; Juha Hartikka; Mauno Ritola; Tuomo Kauranne (IEEE Trans. Aerosp. Electron. Syst., 2015)

Instantaneous doppler signature extraction from within a spectrogram image of a VHF band. - Piotr Ptak; Juha Hartikka; Mauno Ritola; Tuomo Kauranne (IEEE Trans. Aerosp. Electron. Syst., 2016)