Orthogonal Thirty-Two Phase Sequence Sets Design

Abstract

In using orthogonal signals, a multi-input, multi-output (MIMO) radar system and a spread spectrum communication system can improve operating efficiency. The usage of polyphase coded signals as pulse compression sequences sets is a superior alternative. The Modified Genetic Algorithm (MGA) is utilized as a global optimization strategy to create thirty-two phase sequence sets in this work. Design orthogonal thirty-two phase sequence sets with an impulse-like Autocorrelation Function (ACF) and a very low Cross-Correlation Function (CCF). It is impossible for an intercepting receiver to achieve matched processing if radar changes the transmitted code pulse-to-pulse, which makes radar anti-jamming. As a result, a set of thirty-two phase coded signals must have impulse-like autocorrelation for itself and no or minimal cross-correlation with the other codes in the set. Design thirty two phase signals have wide range of applications in Netted Radar Systems(NRS), anti-Anti-Radiation Missile(ARM)  and for multiple inputs multiple output (MIMO) communications. Some of the synthesized results are described in this study, and their qualities outperform four-phase sequence sets previously reported in the literature. The thirty-two phase sequence sets that were synthesized show promise for use in multiple Radar systems and spread spectrum communication. The manufactured sequences also have a complicated signal structure that is difficult for hostile electronics to identify and interpret. The algorithm's convergence rate is demonstrated to be good.