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分析了基于TOA无线电测距的车辆定位系统,主要研究了扩展Kalman滤波算法在其中的应用以及影响定位精度的因素。仿真结果表明,测距误差为20m,定位误差(圆概率误差)可达到15m左右。
The vehicle location system based on TOA radio ranging is analyzed. The application of extended Kalman filtering algorithm and the factors affecting the positioning accuracy are mainly studied. The simulation results show that the ranging error is 20m and the positioning error (circular probability error) can reach about 15m.