Research on velocity measurement of high-speed multi-target

The keystone formatting for high speed targets can only be performed correctly by knowing right Doppler ambiguity number. The "sub-band double carrier frequency conjugated processing" method can achieve a quite long equivalent wavelength comparing with transmitted signals. With this characteristic, a reasonable velocity measurement procedure is proposed. And the impact of cross term of targets with same ranges, which disturb the main terms that we expect, is discussed here too. Simulation results show that proposed procedure can achieve accurate range and velocity information of high speed multi-target.