Scattering measurements from a buried object using an acoustic parametric source
This paper briefly describe an experimental work which aims at using an acoustic parametric source to detect buried objects. A broadband (150~250 kHz) transducer is used as a parametric source and transmitting primary frequency signals with CW and LFM envelope at various pulse lengths and bandwidths. Scattering measurements from a buried metal disk of 15cm diameter is implemented in a test tank of size 1m×0.7m×1m. The results show that the acoustic response between the watersediment interface and the buried disk can be distinguished clearly in the time domain by transmitting a broadband (5~35 kHz) difference frequency LFM signal without envelope correction, and the reverberation signal is weak due to narrow beam of the parametric source.
Buried objects Scattering measurements Acoustic parametric source LFM signal
Fan Wei Liu Liang
Science and Technology on Underwater Acoustic Antagonizing Laboratory;Shanghai Marine Electronic Equ Shanghai Marine Electronic Equipment Research Institute JinDu Road,5200,China
国际会议
秦皇岛
英文
1553-1557
2015-09-18（万方平台首次上网日期，不代表论文的发表时间）