中国激光, 2020, 47 (3): 0310001, 网络出版: 2020-03-12   

基于二维激光多普勒测速仪建立新组合导航系统的方法 下载: 789次

Method for Establishing New Integrated Navigation System Based on Two-Dimensional Laser Doppler Velocimeter
作者单位
1 南京理工大学机械工程学院, 江苏 南京 210094
2 国防科技大学前沿交叉学科学院, 湖南 长沙 410073
摘要
为了提高车辆在行驶过程中的测量精度,提出一种利用二维激光多普勒测速仪(2D LDV)和捷联惯性导航系统(SINS)建立新的组合导航系统的方法。阐述了2D LDV的基本原理,并且详细讨论了由2D LDV和SINS组成的新的组合导航系统进行位置解算的过程。理论及实验结果表明:新的组合导航系统很好地抑制了纯惯性导航误差发散的特性;相比于由一维激光多普勒测速仪构成的组合导航系统,2D LDV提高了载体速度测量的精度,从而进一步提高了组合系统的导航精度。新的组合导航系统两次实验在2.2 h内的定位误差分别只有5.9 m和5.2 m。
Abstract
In this study, a newly built integrated navigation system using a two-dimensional laser Doppler velocimeter (2D LDV) combined with strapdown inertial navigation system (SINS) to enhance the measurement accuracy of a vehicle being driven is proposed. The basic principle of the 2D LDV is described, and the dead reckoning process is discussed in detail with respect to the newly built system comprising 2D LDV and SINS. The theoretical and experimental results show that the proposed navigation system effectively alleviates the error accumulation effect of the pure SINS. Moreover, compared with the integrated navigation system composed of one-dimensional laser Doppler velocimeter, the 2D LDV improves the accuracy of the carrier velocity measurement, thereby demonstrating the improved navigation accuracy of the proposed navigation system. The dead reckoning position errors of the proposed navigation system in the two experiments are observed to be only 5.9 m and 5.2 m over 2.2 h.

厉文涛, 聂晓明, 周健. 基于二维激光多普勒测速仪建立新组合导航系统的方法[J]. 中国激光, 2020, 47(3): 0310001. Li Wentao, Nie Xiaoming, Zhou Jian. Method for Establishing New Integrated Navigation System Based on Two-Dimensional Laser Doppler Velocimeter[J]. Chinese Journal of Lasers, 2020, 47(3): 0310001.

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