多波束测点位置归算横纵摇耦合效应分析
发布时间：2019-05-21 08:48
【摘要】：多波束测点位置归算是多波束测深数据处理的重要环节,位置归算精度的高低将直接影响测深成果质量。针对目前多波束测点位置归算过程中存在的横纵摇耦合效应问题,首先,以换能器基阵坐标系统下测点位置归算为例分析横纵摇耦合效应产生的原因。进而,推导换能器基阵旋转角与横纵摇角之间的关系并在原模型的基础上建立改进的测点位置归算模型。最后,通过仿真实验对原模型与改进模型的计算结果进行比对分析。结果表明:当纵摇角较小时,横纵摇耦合效应对测深影响不明显;当纵摇角较大时,在边缘波束附近,原模型的测深相对误差超过了规定限差。因此为获取高质量测深成果,宜采用改进模型进行位置归算以避免横纵摇耦合效应的影响。研究结果为进一步改善多波束测点位置归算精度提供一定参考。
[Abstract]:Multi-beam point location reduction is an important link in multi-beam bathymetric data processing, and the accuracy of position reduction will directly affect the quality of bathymetric results. In order to solve the problem of rolling coupling effect in the process of position reduction of multi-beam measuring points, firstly, the causes of transverse and pitching coupling effect are analyzed by taking the position reduction of measuring points in transducer array coordinate system as an example. Furthermore, the relationship between the rotation angle and the rolling angle of the transducer array is derived, and an improved position reduction model of the measuring point is established on the basis of the original model. Finally, the calculation results of the original model and the improved model are compared and analyzed by simulation experiments. The results show that when the pitching angle is small, the effect of pitching coupling on bathymetric is not obvious, and when the pitching angle is large, the relative error of bathymetric of the original model exceeds the specified limit difference near the edge beam. Therefore, in order to obtain high quality bathymetric results, the improved model should be used to calculate the position in order to avoid the influence of rolling coupling effect. The research results provide some reference for further improving the accuracy of position reduction of multi-beam point measurement.
【作者单位】： 海军大连舰艇学院海洋测绘系;91650部队;
【基金】：国家自然科学基金项目(41576105、41074002)
【分类号】：P229
本文编号：2481979
[Abstract]:Multi-beam point location reduction is an important link in multi-beam bathymetric data processing, and the accuracy of position reduction will directly affect the quality of bathymetric results. In order to solve the problem of rolling coupling effect in the process of position reduction of multi-beam measuring points, firstly, the causes of transverse and pitching coupling effect are analyzed by taking the position reduction of measuring points in transducer array coordinate system as an example. Furthermore, the relationship between the rotation angle and the rolling angle of the transducer array is derived, and an improved position reduction model of the measuring point is established on the basis of the original model. Finally, the calculation results of the original model and the improved model are compared and analyzed by simulation experiments. The results show that when the pitching angle is small, the effect of pitching coupling on bathymetric is not obvious, and when the pitching angle is large, the relative error of bathymetric of the original model exceeds the specified limit difference near the edge beam. Therefore, in order to obtain high quality bathymetric results, the improved model should be used to calculate the position in order to avoid the influence of rolling coupling effect. The research results provide some reference for further improving the accuracy of position reduction of multi-beam point measurement.
【作者单位】： 海军大连舰艇学院海洋测绘系;91650部队;
【基金】：国家自然科学基金项目(41576105、41074002)
【分类号】：P229
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