Polyphase Orthogonal Waveform Design for MIMO Radar Based on Improved HHO Algorithm

Abstract

An improved discrete Harris Hawks Optimization based on genetic algorithm (GA-DisHHO) is proposed in this paper to enhance the correlation properties and reduce algorithm complexity in the design of orthogonal polyphase waveform for multiple input multiple output (MIMO) radar. Replacing Levi flight process with local cyclic variations, the crossover and mutation process of GA are utilized in GA-DisHHO to update individuals in order to achieve discrete optimization. Global searching and local searching are integrated in GA-DisHHO to improve the accuracy of solutions without any additional parameter setting. The simulation results showed the feasibility and effectiveness of GA-DisHHO algorithm.