提高全球导航卫星定位系统精度和稳定性的算法研究

针对地面用户接收机的性能易受各种复杂环境影响的问题,研究了在遮挡、多径等复杂环境下,提高和保持定位精度及稳定性的定位算法。基于RAIM思想,对量测信息进行故障诊断和处理,给出了一种高性能、低复杂度的EKF算法。仿真和试验表明,该算法不但提高了定位的精度,而且具有较强的鲁棒性和较强的工程实用性。

The Research of Improving Accuracy and Stability of Global Navigation Satellite Positioning System

The performance of the receiver for terrestrial users vulnerable to a variety of complex issues affecting the environment studied occlusion,multipath and other complex environments,improve and maintain the accuracy and stability of the positioning algorithms. RAIM- based thinking on the measurement information for fault diagnosis and treatment,gives a high- performance,low-complexity EKF algorithm. Simulations and experiments show that the algorithm not only improves the positioning accuracy,but also has strong robustness,with strong engineering practicality.