多波束声纳计量测试系统设计

为满足多波束声纳量值溯源与传递需求,设计多波束声纳关键参数的计量测试系统。基于大比尺原型深水港池和多维运行控制机构,通过水下横向测距代替垂向测深的方式对多波束声纳进行了测深准确度与有效条带宽度的计量测试。阐述了测试系统的主要组成和测试方法,给出了本测试系统测深结果的扩展不确定度。参考标准值与示值(或标称值)比对结果表明,被检多波束声纳测深示值误差小于0.2%,条带宽度误差小于7%。为规范水下声纳设备技术指标校准,指导多波束声纳计量标准建设提供参考。

Metrization System Design for Multi-beam Sonar

In order to meet the traceability and dissemination of multi-beam sonar,a set of calibration system for multibeam sonar is designed.Using the multi-dimensional operation control device,calibration testing is carried out in the large scale and deepwater prototype pool.Bathymetry and effective swath width calibration are tested by means of horizontal ranging instead of vertical sounding.Components and testing method of the calibration system are introduced,as well as the bathymetry expanded uncertainty of the calibration system is presented.By comparing the calibrating value and the indicating or nominal value of the detected multi-beam sonar,test results show that the bathymetry value error is less than 0.2%,and the swath width error is less than 7%.It is of practical significance to standardize the technical specifications of underwater sonar equipment such as multi-beam sonar.