Abstract: Multi-beam calibration is one of the most important steps in multi-beam measurement. Calibration accuracy can affect the quality of multi-beam sounding data to a great extent. The influence of measurement error of surface sound speed and sound speed profile on multi-beam attitude calibration is analyzed in this paper. The influence law of sound speed on the accuracy of roll deviation, pitch deviation and heading deviation is obtained.

Key words: multi-beam, surface sound speed, sound speed profile, attitude deviation, multi-beam calibration

摘要： 多波束校准是多波束测量过程中最重要的步骤之一，校准精度在很大程度上影响着多波束测深数据的质量。通过分析表面声速与声速剖面测量误差对多波束姿态校准的影响，得出声速对横摇偏差、纵摇偏差、艏向偏差校准精度的影响规律。

关键词: 多波束, 表层声速, 声速剖面, 姿态偏差, 多波束校准