On the basis of the principle of range-Doppler coupling of linear frequency modulation signal

a new method of radial velocity estimation for high coupling coefficient is presented.Using range information brought by radar waveform switching

the radial velocity is efficiently estimated through a uniform velocity model and a uniform acceleration model established in the method

which solves such problems as range measurement bias modification caused by range-Doppler coupling

data association and optimal Kalman Filter construction in the case of high coupling coefficient.The simulation result of missile defense radar verifies the efficiency.