然而，卫星的覆盖范围并非常常可以拍到清晰的快照；由于有云层的遮挡，气候也无法保证快照的效果。
Yet satellite coverage doesn't always allow for good snapshots; nor does the weather, which can put clouds in the way.
通过对地面卫星信号覆盖区内的多普勒频率偏移及不确定性范围的计算，给出了卫星导航系统信号的多普勒频率偏移与接收机位置之间的关系。
By calculating the Doppler shift and its uncertainty in the signal covering area, the relation between Doppler shift and the position of the receiver is obtained.
实践证明遥感卫星数据时效性好、覆盖范围大、成本相对低廉。
It is proved that the remote sensing satellite data is timely, widely covered and costs relatively lower.
利用SPOT卫星影像数据结合GIS技术建立云东海湖区恢复范围的土地利用数据库系统，进行土地覆盖变化分析；
Utilize SPOT satellite photograph data and GIS technology to establish land utilization data system of Yundonghai lake restoration's scope, and analyze land overlay;
采用卫星通信网实现移动网络的数据传输可以提供足够的带宽和更大的覆盖范围，是一种比较经济、可行的解决方案。
Satellite has the characteristics of broadcasting, large scale and seamless coverage of the earth. Thus, it is an effective and feasible way to tackle the problem of MEMO with satellite communication.
重点分析利用遥感- GIS界定流域范围的方法、流域地表覆盖状况和植被覆盖密度的卫星遥感影像处理方法。
The river-valley surface eco-environment themes available from satellite RS were listed. The focuses were on the methods to determine river valley scopes, surface coverage situations and vegetation...
重点分析利用遥感- GIS界定流域范围的方法、流域地表覆盖状况和植被覆盖密度的卫星遥感影像处理方法。
The river-valley surface eco-environment themes available from satellite RS were listed. The focuses were on the methods to determine river valley scopes, surface coverage situations and vegetation...
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