期刊
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
卷 60, 期 -, 页码 -出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TGRS.2022.3211065
关键词
Receivers; Transmitters; Azimuth; Acoustic beams; Molecular beam epitaxial growth; Transducers; Three-dimensional displays; Bathymetry; cone intersection; multibeam echosounder (MBES); spatial incidence angles
类别
资金
- Wenhai Program of the S&T Fund of Shandong Province for the Pilot National Laboratory for Marine Science and Technology, Qingdao [2021WHZZB1002]
- National Natural Science Foundation of China [42176186]
The article introduces an algorithm called Cross for faster and more accurate acquisition of the spatial incidence angle of multibeam echosounders, which is a generic method regardless of shallow or deep water.
For faster and more accurate acquisition of the spatial incidence angle of multibeam echosounders (MBESs), a better algorithm called Cross is proposed in this article, where the spatial incidence angle can be calculated by solving the simultaneous equations of the transmit and receive cone equations. In the algorithm, the two cone equations for the transmit and receive sectors are established using 14 known angles. Then, the intersection vector of both cones at the same apex can be calculated very quickly from the simultaneous equations of transmit and receive sectors, and the spatial incidence angle and relative azimuth of each beam can also be obtained from them. Comparing with other algorithms, calculating the spatial incidence angle is a generic method regardless of shallow or deep water. Furthermore, the Cross algorithm achieves a similar internal precision and about 12.3%-13.4% speedup than UNB. The effectiveness and practicability of the proposed algorithm are verified through the experiments of various instrument models and file formats.
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