基于实验数据的时差定位系统定位精度推算

Calculation Method for Location Accuracy of Tri-station TDOA System Based on Experimental Data

随着数字技术和通信技术的发展,利用多个接收机进行高精度测时并用时间差来进行定位成为可能。三站时差定位系统,对其进行实际测量是检验该系统实际定位精度的重要环节。由于影响三站时差定位系统定位精度的因素较多,因此充分考虑各种因素的影响对实测数据进行分析,给出三站时差定位精度的推算方法,对于检测定位系统研制厂所估计的定位精度以及下一步为被试定位系统对作战对象定位精度的推算具有极其重要的意义。文中在对影响三站时差定位系统定位精度的因素进行详细分析的基础上,给出了一种基于实验数据的三站时差定位系统定位精度推算方法,并给出了数值计算结果。

With the development of digital and communication techniques, TDOA is measured by using multi-receiver to make high accurate location. In order to verify the practically realized location accuracy, the tri-station must be tested practically. Because the location accuracy of the system is influenced by too many factors in the preal environment, the experimental data should be analyzed deeply and a calculating method for location accuracy must be developed. It is very significant to verify the location accuracy estimated by the research institute and deduce the location accuracy of the practical operational object. On the basis of careful analysis on the factors which influence the location accuracy of a tri-station TDOA locate system, a calculating method is developed basing on the experimental data. Simulation results are given as well.