Tunnel effect elimination in multi-beam bathymetry sonar based on apFFT algorithm

摘要：

Analyzed the tunnel effect and its mechanism of appearance in multi-beam bathymetry sonar and pointed out that the side lobe interference was an important factor which caused the tunnel effect, and the existence of tunnel effect would lead to the multi-beam bathymetry sonar mistake relatively flat seafloor for concave-up horizontal half cylinder terrain. Studied on all phase FFT (apFFT) algorithm and analyzed its immunity to side lobe interference with theoretic deduction and computer simulation, and used the algorithm to process the tunnel effect existed in the lake experiment data. The processing results proved its validity in eliminating the side lobe interference in edge beams of multi-beam bathymetric data.

关键词： multi-beam bathymetry sonar tunnel effect side lobe interference apFFT algorithm

作者: Baowei Chen Haisen Li YukuoWei Bin Yao

作者单位: Science and Technology on Underwater Acoustic Laboratory, Harbin Engineering University, Harbin 150001, China

会议类型: 国际会议

会议名称: 2010 IEEE 10th International Conference on Signal Processing(第十届信号处理国际会议 ICSP 2010)

会议地点: 北京

会议语种:英文

页码: 2391-2394

在线出版日期: 2010-08-24（万方平台首次上网日期，不代表论文的发表时间）