space navigation system

Global navigation satellite system ( GNSS) is a space based wireless positioning system.

全球卫星导航系统（Global Navigation Satellite System，GNSS）是一种空间无线电定位系统。

Observability Analysis of Deep Space Autonomous Navigation System

载人航天器深空自主导航深空自主导航系统的可观性分析

A multi-view-based virtual space navigation system is designed.

设计开发了一个基于多视点的虚拟实景空间漫游系统。

Global navigation satellite system ( GNSS) refers to a kind of space navigation technology for navigation and positioning on the ground, sea and space using in the sky of the navigation satellite.

全球导航卫星系统GNSS（Global Navigation Satellite System），是指利用在天空中的导航卫星对地面、海洋和空间用户进行导航定位的一种空间导航技术。

To reduce the debugging cycle of ground operation control system and space satellite system, and carry on the simulation test and the technical confirmation to the satellite navigation system quantitatively, it is imperative to build an earth station observation simulation system.

为了缩短地面运控系统与空间卫星系统的调试周期，定量的对卫星导航系统进行仿真测试和技术验证，建立地面站观测数据仿真系统势在必行。

The city district space navigation system is closely relevant to people's daily life, provides convenient guides for the traffic, and is a significant part of a city's image.

城市街区空间引导系统与人们的日常生活息息相关，为人们的出行提供了便捷的标识引导，同时它也是城市形象的重要组成部分之一。

The final satellite of China's Beidou Navigation System has been sent into space.

中国北斗导航系统的最后一颗卫星发射升空。