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- W2393670314 abstract "Seafloor plays an important role in acoustic propagation as a significant boundary of ocean waveguide. In order to measure the seafloor reflection coefficient fast and accurately, a method based on pulse compression technique is proposed in this paper, where reflective wave are extracted from the received compressing signal. This method not only can overcome unavoidable multi-path disturbance in experiment, but also can easily obtain the reflection coefficients for different frequencies in measured frequency band at the same time. That is, wide-band measurement for reflection coefficient is realized. The reflection coefficient of sandy sediments that widely cover over continental shelf and littoral regions is measured in laboratory. Through the comparison of narrow and wide band measured results in the frequency range of 20kHz-60kHz, it is found that the latter somewhat exhibits deviation and fluctuation in the edge, but a broader frequency band and more accurate result would be obtained by increasing the frequency band of transmitting signal to improve the compression effect or applying appropriate window functions to suppress the levels of side lobes." @default.
- W2393670314 created "2016-06-24" @default.
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- W2393670314 date "2014-01-01" @default.
- W2393670314 modified "2023-09-24" @default.
- W2393670314 title "Wide-band measurement for reflection coefficient of sandy sediments" @default.
- W2393670314 hasPublicationYear "2014" @default.
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