Design of orthogonal polyphase code for MIMO radar based on hybrid algorithm

A method based on genetic algorithm and tabu search algorithm is proposed to design an orthogonal polyphase code for multiple input multiple output(MIMO) radar,and is used to design a zero correlation zone like orthogonal polyphase code.The tabu search algorithm is introduced to the genetic algorithm to be a part of the hybrid algorithm.This hybrid algorithm takes the global convergence ability of genetic algorithm and the local convergence ability of the tabu search algorithm into account.In order to take a good initial result for the tabu search algorithm,it will not be adopted until the genetic algorithm has optimized to a certain extent.Namely the tabu search algorithm only iterates once when the genetic algorithm iterates several times.The optimum preserved strategy is used to avoid the best solution to be lost,which reduces the autocorrelation peak sidelobe and cross-correlation peak and improves the mainlobe-to-sidelobe ratio.Simulation results show that the proposed method is feasible and effective.