Doppler compensation algorithm based on conjugate noise group

Due to the Doppler sensitive effective in noise radar, we present a Doppler compensation algorithm based on conjugate noise group. Firstly, the Doppler frequency is estimated by the spectrum of mixed signal within the group. Then, the Doppler compensation function related to Doppler ambiguity is constructed. Finally, target detection is performed with the predetermined threshold in the two-dimensional (2-D) plane, which is constructed by matched filter output of Doppler compensated signal. Compared to classical Doppler compensation methods, this algorithm could solve Doppler sensitive without Doppler searching, and distinguish Doppler information simultaneously. Simulation results demonstrate the validity of the proposed algorithm.