Adaptive M-ary spread spectrum based dual-function detection and communication system

Abstract

In this paper, we propose a joint detection-communication technique for continuous active sonar (CAS) systems. Particularly, we embed information in the waveforms used for sonar detection via the adaptive M-ary Spread Spectrum modulation, enabling simultaneous communication-detection. To improve the overall performance of the integrated system, we apply the Generalized Sinusoidal Frequency Modulated waveforms and optimize it through the Genetic Algorithm. The numerical simulation and field experimental results show that the proposed technique can perform the CAS detection and communication simultaneously with remarkable reliability.