These days satellites are used far more widely for communications, terrestrial navigation, crop monitoring and much more.
如今卫星被更广泛的应用在通讯，陆地导航，农作物监测等等。
The error model can be used a tool of terrestrial vehicle navigation error analysis, but also can be used in its initial alignment.
此误差模型，不仅可以作为陆地载体的导航误差分析，而且可以用于系统的初始对准研究。
The error model can be used a tool of terrestrial vehicle navigation error analysis, but also can be used in its initial alignment.
此误差模型，不仅可以作为陆地载体的导航误差分析，而且可以用于系统的初始对准研究。
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