基于月面LTE基站OFDM测距的巡视器定位

针对目前的月面定位技术中成本高、观测时间长以及缺少可用定位信息的问题，开展了基于长期演进（LTE）基站的月面定位技术的研究，并引入了LTE技术，通过在月面布设基站为月面巡视器的实时定位提供了可行基础。提出了一种基于因子图优化的月面定位方法，通过融合月面基站的正交频分复用（OFDM）测距信息和巡视器自身的惯性导航信息，利用有限的月面基础设施，在较低成本的硬件条件下实现了月面巡视器的准确定位。仿真实验结果显示，该月面定位方法具有良好的准确性和鲁棒性。

Rover positioning based on lunar surface LTE base station OFDM ranging

To solve the problems of high cost, long observation time and lack of available positioning information in the current lunar surface positioning technology, research on lunar surface positioning technology is carried out based on long term evolution (LTE) base stations and the LTE technology is introduced. The deployment of base stations on the lunar surface provides a feasible basis for the real-time positioning of lunar rovers. A lunar surface positioning method is proposed based on factor graph optimization. By fusing the orthogonal frequency division multiplexing (OFDM) ranging information of the lunar base station and the inertial navigation information of the rover and utilizing limited lunar surface infrastructure, accurate positioning of the lunar surface rover is realized under low-cost hardware conditions. The simulation experiment results show that this lunar surface localization method possesses good accuracy and robustness.