At last, it takes over the challenges and counter-measures of the navigationandpositioningsatellite technology under the background of the navigation warfare.
最后，对导航战背景下的卫星导航定位技术所面临的挑战和应对措施进行了讨论。
2
The road-mobile variant might have a lower accuracy but this can be improved by adding satellitenavigationandpositioning capability such as GPS or GLONASS to the launch platform.