多波束测深系统的精度评估方法研究

The Evaluation method of the Precision of the Multi-beam Bathymetric System

在分析了多波束测深系统测量误差来源的基础上 ,讨论了多波束测深系统静态精度、相对精度和绝对精度的系统精度评估方法。采用的静态精度评估方法就是在多波束测深系统静止的条件下考核其对同一位置测量深度的误差 ;相对精度评估方法就是布设多条交叉重叠的测线 ,考核交叉重叠点的测深误差 ;绝对精度评估方法是在多波束测深的同时利用高精度的测深仪测量同一区域 ,用此参考地理模型来检验多波束测深的精度。根据误差理论 ,三种精度评估的方法分别从系统稳定性、自符合性和系统误差方面确定各误差源的综合误差 ,它们是检验多波束测深系统精度是否符合海道测量标准的有效方法。文中给出了系统试验数据的重要结果及设备验收的方法。

On the basis of analyzing the error source of the multi-beam bathymetric system, the authors discuss the evaluation method of the system precision, including static precision, relative precision, and absolute precision. The static precision evaluation method is to measure the error at the same depth under the static condition of the system; the relative precision evaluation method is to measure the error of the overlap points by deploying various overcrossing and overlapping lines; absolute precision evaluation method is to measure the same area using high precision bathymeter in order to test the precision of multi-beam bathymetry by referring to it's geography model at the same time. According to the error theory, the three methods identify integrated error of error sources from the viewpoint of system stability, self-coincidence and system error, respectively, and they are effective methods to test whether this system accords with the standards of channel measuring. We provide important experiment data and validation method of the equipment.