Range and velocity ambiguity resolution based on screening method

In consideration of the measurement error and the blind region, a novel algorithm is proposed for PD radar resolving range and velocity ambiguity. The algorithm is based on minimum variance criteria, it can screen out the true values of range and velocity from all possible values under the reference PRE compared with the traditional Chinese remainder theorem, the computational complexity of this novel algorithm is much smaller. Simulation results show that the algorithm has a good capability of tolerating measurement errors, and can correctly resolve ambiguity even if target is only visible under two PRFs.