双曲面定位系统的误差分析

Error analysis for a hyperbolic locating system

本文导出了双曲面定位系统的定位误差公式,分析了定位误差源及对应的权重系数,以水下短基线阵为例,计算了声速、时间差、阵元坐标的测量误差和声线弯曲引起的系统定位误差,以长基线阵为例,计算了定位精度区。本文结果对合理分配双曲面定位系统各误差源的误差有参考价值.

The formulae for calculating the ocation error of a hyperbolic locating system are deduced. The error sources and their weight are analysed. For an underwater array with short base-lines, the location error of the system caused by the measuring errors of sound velocity, time difference and coordinates of the array elements and by ray bending is calculated. For an underwater array with long base-lines, the accuracy range of location is found. The above results are valuable for reference in determining the error distribution of the hyperbolic locating system.