Abstract. We consider the mathematical models for underwater acoustic sensors, the algorithm for threat detection by a multisensory system, and optimization problems for placement of such systems. The mathematical methods for optimal sensor placement is developed. The limit theorem on the optimality of sensor placement is proved. The numerical experiments demonstrate that the algorithm outperforms the available mathematical method for optimal sensor placement.

Keywords: sensor, multisensor system, algorithm for threat detection, optimal sensor placement, asymptotic optimality.