目前偏振光导航传感器大多以POL-神经元模型为基础,误差主要来源于通道间信号增益差异,以及检偏器阵列的相对角度误差.为了提高偏振罗盘信息的检测精度,提出了一种独立通道偏振罗盘信息检测方法.利用三个相互独立的偏振光检测通道测量大气偏振信息,获取航向角信息.并且,结合分时复用技术,设计了独立通道偏振光导航传感器,提出了相应的标定方法和误差补偿算法.实验结果表明,独立通道偏振光导航传感器能够显著降低偏振罗盘信息检测误差,补偿后传感器误差在±0.05°以内.

Most polarized light navigation sensors are designed according to the POL-neuron model.The main error sources are gain difference between channels and the relative angle error.To improve the measurement precision of polarization compass information,we propose an independent channel measurement method of polarization compass information.The atmospheric polarization information is measured by using three independent polarization measurement channels to obtain heading-angle information for navigation.We further design an independent channel polarized light navigation sensor via integrating the time division multiplexing technology,and propose the calibration method and error compensation algorithm.The experimental results show that the independent channel polarized light navigation sensor significantly reduces measurement error of polarization compass information (within ±0.05° after compensation).