Abstract: Acoustic Frequency Domain Reflectometry (AFDR) is a novel sensing technique that employs frequency modulated continuous wave (FMCW) methods in acoustic waveguide reflectometry. This approach ...

Its modular design allows for launch and retrieval via shafts or potential disassembly within the tunnel. The CutterHead, equipped with 15” heavy-duty back-loading disc cutters, and Variable Frequency ...

Nature Research Intelligence Topics enable transformational understanding and discovery in research by categorising any document into meaningful, accessible topics. Read this blog to understand ...

Due to the unique characteristics of underwater acoustic channels, existing radar communication (RadCom) signals and detection methods have shortcomings when applied underwater: 1) Doppler ambiguity ...

TABLE 1. Technical specification for AD5933. For the impedance measurement, the DDS and DAC work together to generate an analog frequency sweep signal, which is then amplified and sent out as an ...