基于RDSS辅助的Doppler/SINS组合导航系统研究

Doppler／SINS组合导航系统具有输出水平速度误差较小、平台角误差较小的优点，但存在经纬度误差较大的缺点，故不能作为独立的导航定位系统；而双星定位系统(RDSS)可输出较高精度的经纬度信息，但存在定位滞后的缺陷。利用Doppler／SINS的输出水平速度可以补偿RDSS的位置滞后，同时经过位置补偿后的RDSS系统可实时修正Doppler/SINS组合导航系统。仿真结果表明，基于RDSS辅助的Doppler／SINS组合导航系统能有效地克服Doppler／SINS系统的缺点，是一种新型的组合导航系统，可应用于导航定位精度要求较高的场合。

Study on the Doppler/SINS Integrated Navigation System Based on the Assistance of RDSS

The advantages of the integrated navigation system of Doppler/SINS are less output level velocity errors and less errors of level angles, but the bigger shortcoming is longitude and latitude errors. So it can not be used as the unique navigation positioning system. The Double-Star positioning system (RDSS) can output the longitude and latitude information with hiqher precision, but with the shortcoming of position lag. lf the output level velocities of the Doppler/SINS integrated navigation system are used to compensate for the position lag of RDSS then RDSS after compensated can correct the Doppler/SINS system in real time. The simulation results show that the Doppler/SINS system based on the assistance of RDSS can effectively overcome the shortcoming of the Doppler/SINS system, and is a new integrated navigation system which can be used in the case that needs the high precision of navigation position.