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。
In this study, a newly built integrated navigation system using a two-dimensional laser Doppler velocimeter(2 D 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 2 D LDV is described, and the dead reckoning process is discussed in detail with respect to the newly built system comprising 2 D 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 2 D 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.
作者
厉文涛
聂晓明
周健
Li Wentao;Nie Xiaoming;Zhou Jian(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing,Jiangsu 210094,China;College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha,Hunan 410073,China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2020年第3期261-266,共6页
Chinese Journal of Lasers
基金
湖南省自然科学基金(2016JJ3022)。
关键词
遥感
二维激光多普勒测速仪
捷联惯性导航系统
组合导航系统
位置解算
remote sensing
two-dimensional laser Doppler velocimeter
strapdown inertial navigation system
integrated navigation system
dead reckoning
作者简介
周健,E-mail:841788292@qq.com。
