CAJ | 학술논문

针对阵列姿态变化造成深水多波束测深声纳测深误差问题，给出了一种基于横摇稳定的多波束测深方法。其基本思路是利用姿态数据实时地改变接收波束相控角，使得合成波束指向角稳定在较小的变化区间内，确保了波束形成后信号来自有效的波束宽度覆盖范围。通过发射时刻三维姿态和接收时刻横摇姿态解算得出波达时刻对应的合成波束指向角，进行声速修正和归位计算得到最终测深点的深度与位置。MATLAB仿真和实际海试数据处理结果表明，该方法能够获得期望方向附近的海底脚印覆盖并且达到较好的精度。
침대진렬자태변화조성심수다파속측심성납측심오차문제，급출료일충기우횡요은정적다파속측심방법。기기본사로시이용자태수거실시지개변접수파속상공각，사득합성파속지향각은정재교소적변화구간내，학보료파속형성후신호래자유효적파속관도복개범위。통과발사시각삼유자태화접수시각횡요자태해산득출파체시각대응적합성파속지향각，진행성속수정화귀위계산득도최종측심점적심도여위치。MATLAB방진화실제해시수거처리결과표명，해방법능구획득기망방향부근적해저각인복개병차체도교호적정도。
This paper presents a bathymetric algorithm based on roll compensation pointing at sounding error problem of multi-beam echo sounder caused by variation of array attitude. The basic idea is using the attitude data to real-time change the receiving beam phase in order to control the synthetic directional angle along the track in a smaller variation range, and ensure the signal after beam-forming within effective beam width coverage. At the same time, the DOA of synthetic beam corresponding to the arriving time can be obtained by calculating the transmitting and receiving equa-tions after attitude stabilization. Then the depth and location of the final sounding point can be obtained by sound ve-locity correction and homing calculation. After MATLAB simulation and real data processing, the algorithm is proved effective. The result show that using the beam after roll compensation can obtain the sea floor footprints coverage near desired direction and achieve better accuracy.