Research on invariant imbedding method of velocity ambiguity resolution

Velocity ambiguity exists in pulse Doppler radar. The differentiation of range data can be used to resolve velocity ambiguity, but the differentiation is not exact because of the measurement error of range data. A novel method called invariant imbedding method which uses range data to resolve velocity ambiguity is proposed. This method is combined with weighting function, and then the final result is easy to apply. The theoretical analysis and simulation prove that invariant imbedding method is effective in velocity ambiguity resolution, and invariant imbedding method can get the target position perfectly. The influence of acceleration on invariant imbedding method is derived.