单波束测深的误差来源与质量控制

Error Sources and Quality Control of Single Beam Sounding

淮河航道的维护和整治必须以高精度的测量数据作为核心基础。为了提高单波束测深的精度,通过阐述单波束测深系统的作业原理,找出单波束测深实际操作过程中的误差来源为:声速、测船姿态、换能器相对位置,并分析各因子对测深精度的影响,从而有针对性地提出因声速、测船姿态、换能器相对位置变化引起误差的消除措施。通过对相关参数的改正、校准和作业流程的规范来进行质量控制,提升单波束测深精度。

The maintenance and improvement of the Huaihe waterway must be based on high-precision measurement data.In order to improve the accuracy of single beam sounding,this paper describes the operation principle of single beam sounding system,and finds out the error source in the actual operation process of single beam sounding:sound speed,ship attitude,relative position of energy converter,and analyzes the influence of each factor on the accuracy of the sounding,and then puts forward targeted measures to eliminate errors caused by the sound speed,ship attitude,and relative position of energy converter.Through the correction and calibration of relevant parameters and the specification of operation process,the quality control is carried out to improve the accuracy of single beam sounding.