Huang Rong, Wang Qi, Nie Xiaoming, Zhou Jian
Appl Opt. 2020 Dec 1;59(34):10667-10672. doi: 10.1364/AO.405473.
In order to provide accurate altitude information autonomously for land navigation, a self-developed one-dimensional reference-beam laser Doppler velocimeter (1D LDV) with light weight, small volume, and low cost is integrated with a strapdown inertial navigation system (SINS). The velocity sensed by the 1D LDV and the altitude output by the SINS are fused by the dead reckoning algorithm. Dynamic vehicle tests are carried out in an urban area with the altitude difference of 28 m and a mountainous area with the altitude difference of 1363 m. The horizontal positioning error and the altitude error are 10.8 m and 0.5 m in the urban area and 45.9 m and 3.6 m in the mountainous area. The experimental results illustrate that the developed SINS/1D LDV integrated navigation system is viable to provide highly accurate altitude as well as horizontal parameters in practical application.
为了在陆地导航中自主提供精确的海拔信息，将自行研制的具有重量轻、体积小、成本低特点的一维参考光束激光多普勒测速仪（1D LDV）与捷联惯性导航系统（SINS）集成。通过航位推算算法融合1D LDV感测的速度和SINS输出的海拔。在海拔差为28米的市区和海拔差为1363米的山区进行了动态车辆测试。在市区水平定位误差和海拔误差分别为10.8米和0.5米，在山区分别为45.9米和3.6米。实验结果表明，所研制的SINS/1D LDV组合导航系统在实际应用中能够提供高精度的海拔以及水平参数。
