超短基线系统定位精度改进方法研究

Research on the Method of Improving Positioning Accuracy of Ultra Short Baseline System

超短基线(USBL)定位过程中的定位精度受多种因素影响,作为众多影响因素中的一种,基阵阵型的设计对于超短基线定位系统的定位精度影响尤为严重。针对基阵阵型在超短基线定位中的作用,本文开展了基于基阵阵型设计的数据融合改进方法,该改进方法将各基本阵列构型的初步定位结果进行融合并将融合结果作为最终定位结果。将本文提出改进方法应用于超短基线系统定位中,并通过误差的平均值与标准差对试验结果进行比对,试验结果表明:相比于其他阵型的系统,本文改进USBL系统的定位精度更高,体现了本文方法的优越性。

The positioning accuracy of the ultra short baseline positioning system is affected by many factors.As one of the many factors,the design of the array has a particularly serious impact on the positioning accuracy of the ultra short baseline positioning system.In view of the role of array in ultra short baseline positioning,this paper develops an improved method of data fusion based on array design,which fuses the preliminary positioning results of each basic array configuration and takes the fusion results as the final positioning results.The improved method proposed in this paper is applied to the positioning of the ultra short baseline system,and the test results are verified by the average value and standard deviation of the error.The test results show that the positioning accuracy of the improved USBL system is higher than that of the USBL(ultra short baselines)system of other arrays,which reflects the superiority of this method.