应用差分方法提高三星时差定位精度研究

Research on Improving Location Accuracy of Tri-Satellite TDOA System by Using Differential Technique

利用误差理论对三星时差定位系统的定位误差进行了定性分析和定量推导。在此基础上,尝试将测量学中的差分方法应用在三星时差技术体制的无源定位系统中,以期提高定位精度。仿真试验和数据验证分析表明,该方法能一定程度上提高其定位精度。

To improve the location accuracy of tri-satellite TDOA system, a differential technique is proposed. The technique can counteract the influence of the location errors of the TDOA system measurements by setting reference point.The simulations and data analysis confirms that the technique is effective to improve the location accuracy of the tri-satellite TDOA system.