Experimental Demonstration of Active Control of Scattered Sound Field Using Virtual Sensing

The introduction of active noise control technology has effectively enhanced the low-frequency acoustic stealth capability of underwater targets. However, existing active scattering control methods typically require a large number of sensors for real-time sound field extrapolation, posing significant challenges for practical implementation. This paper experimentally validates an improved virtual sensing-based active scattering control method through a field experiment conducted in a shallow-water environment. Unlike conventional methods, the proposed approach significantly reduces the number of required sensors and is applicable to multi-incidence scenarios. Real-time scattering control was achieved using a signal processor embedded within a large-scale model, combined with hydrophone and secondary source arrays mounted on its surface. Experimental results demonstrate both the effectiveness and practical feasibility of the proposed method.