中文摘要：

在现有作业模式下,二维机械式扫描声呐（准）静态测量存在声速误差、姿态信息缺失等问题。针对上述问题,分析声速与姿态参数引起的成图畸变机理,利用数值模拟,计算声速改正代表性误差估值,分析姿态变化对成像的影响。根据实际工程需求,给出允许成图精度所能容忍的声速误差及姿态偏差的阈值范围,并通过试验验证声速误差与姿态偏差在允许范围内对成图的影响。

英文摘要：

In the existing operating mode,two-dimensional mechanical scanned sonar（quasi）static measurement is inaccurate due to sound speed error,lacking of attitude information and other factors.In view of the above problems,this paper analyzes mapping distortion mechanism caused by the sound speed and attitude parameters,using numerical simulation to study the influence of attitude change on the imaging.According to the actual engineering requirements,the threshold range of sound velocity error and attitude deviation which can tolerate the mapping accuracy is given,and the influence of the velocity error and the attitude deviation on the mapping is verified experimentally.