CAJ | 학술논문

传统声线跟踪方法中波束初始入射角的计算采用理想状态下多波束提供的波束分配角，未顾及或未完全顾及船体姿态角的影响进而导致波束海底投射点归位计算带入显著性误差问题。针对此问提出了一种顾及姿态角影响的声线精确跟踪方法，该方法通过研究船体姿态影响下的多波束换能器状态，给出了波束声线实际传播面，并推导出了传播面内波束声线的实际初始入射角，结合声速剖面，最终根据常梯度声线跟踪得到了准确的测深点三维坐标。通过实验比较传统声线跟踪方法和精确声线跟踪方法计算波束在海底投射点的坐标精度，验证了精确声线跟踪方法克服了传统声线跟踪的不足，显著地提高了多波束测深的精度。
전통성선근종방법중파속초시입사각적계산채용이상상태하다파속제공적파속분배각，미고급혹미완전고급선체자태각적영향진이도치파속해저투사점귀위계산대입현저성오차문제。침대차문제출료일충고급자태각영향적성선정학근종방법，해방법통과연구선체자태영향하적다파속환능기상태，급출료파속성선실제전파면，병추도출료전파면내파속성선적실제초시입사각，결합성속부면，최종근거상제도성선근종득도료준학적측심점삼유좌표。통과실험비교전통성선근종방법화정학성선근종방법계산파속재해저투사점적좌표정도，험증료정학성선근종방법극복료전통성선근종적불족，현저지제고료다파속측심적정도。
The assigned beam initial incident angle provided by MBS( multibeam bathymetry system) is adopted by the traditional sound ray tracking method regarding the vessel in the horizontal status, which ignores or does not consider completely the impacts of vessel attitude angles, and lead obvious error to the determination of beam foot?print position.Aiming at the problem. In order to reduce this kind of significant error, an accurate method for sound ray tracking, which considers vessel attitude angles are put forward in this paper. In the proposed method, the actu?al propagation profile is given by means of studying the actual status of MBS transducer impacted by vessel attitude and the actual initial incidence angle of MBS beam is derived by the calculation model. By integrating the sound ve?locity profile, the accurate positioning of beam footprint on seabed is achieved by constant?gradient sound ray track?ing method. By comparing the beam footprint coordinate precision calculated by traditional sound ray tracking meth?od and the precise method of sound ray tracking in experiment, a conclusion can be drawn that the precise method of sound ray tracking can overcome the deficiency of the traditional sound ray tracking. This improves significantly the precision for multi?beam bathymetry.