Multi-target parameter estimation based on velocity compensation in FMCW radar

The de-coupling of range and velocity can be easily solved in symmetry triangular linear frequency modulation continuous wave (STLFMCW) radar. However, the peaks pairing may bring out ghost targets or miss some targets in multi-target situation. To solve this problem, a parameter estimation algorithm is proposed based on velocity compensation. Firstly, a velocity matrix containing targets velocities is obtained by peaks pairing of one-dimensional range profile. Secondly, envelope migration of one-dimensional range profile can be compensated with the velocity. And the vague parameters can be obtained by repairing the compensated peaks with the first sweep peaks. Finally, accurate parameters are obtained by rejecting the ghost targets. The effectiveness of the proposed method is demonstrated by simulations.