基于月光偏振罗盘的载体自主定位方法

为了克服现有偏振定位技术无法全天时工作的缺陷，充分发挥偏振定位技术的自主性，提出一种夜间环境下基于月光偏振罗盘的载体自主定位方法。设计了仿生月光偏振罗盘传感器，改进了一种基于偏振度阈值检测的月亮高度角计算方法，通过实时更新月亮赤经、赤纬和格林时角，利用不同时刻的月亮高度角解算出载体经纬度信息。最后进行静态实验，验证了算法的可行性。实验结果表明，该方法可以稳定获取载体经纬度信息，且定位误差为42.34km。该方法增强了偏振定位技术的全天时性能，在夜间环境下的自主定位领域有着重要应用价值。

Method of Vehicle Autonomous Positioning Based on Moonlight Polarized Compass

In order to overcome the shortcomings of the existing polarization positioning technology unable to work at night, and give full play to the autonomy of polarization positioning technology, a method of vehicle autonomous positioning based on the moonlight polarized compass in the night is proposed. A bionic moonlight polarized compass sensor is designed, and a method for calculating the height of the moon based on the detection of the polarization threshold is improved. The right ascension, declination and Green hour angle of the moon are updated in real-time, and the latitude and longitude information of the vehicle is calculated by different moon height. Finally, static experiments are performed to verify the feasibility of the algorithm. Experimental results show that the method can obtain vehicle latitude and longitude information stably, and the positioning error is 42.34km. This method enhances the all-day performance of polarization positioning technology, and has important application value in the field of independent positioning in the night.