针对现代应用环境对导航系统自主性、高精度、无源性的要求,提出了捷联惯性(SINS)/计程仪/重力组合的无源导航方案。深入研究了SINS/计程仪/重力的信息融合算法,构建了SINS/计程仪/重力组合导航可视化仿真系统,实现了传感器仿真模块构建、组合导航计算、地图和轨迹显示等功能。仿真系统的计算结果表明,SINS/计程仪/重力组合导航系统姿态、速度和位置精度稳定,能够满足长时间、一定精度的导航要求,具有广阔的应用空间。

Autonomous, highly precise and passive navigation system is highly demanded in modern environment. To meet the requirements above, a passive navigation scheme was presented and shown as SINS/log/gravity integrated navigation system. The information fusion method was deeply discussed. Then, the SINS/log/gravity integrated navigation visual simulation system was realized and functions including sensors simulation module, integrated navigation computation and the display of map and track were actualized. The simulation results show that the attitude, velocity and positioning accuracy of SINS/log/gravity integrated navigation system are stable and it is able to meet the demand of long time navigation with certain accuracy in wide application.