The Army also found that the balloons were valuable for the use of charting the terrain, and with the newly invented photographic camera, aerialmapping was invented.
北方军发现用这些气球绘制地图也很有价值，照相机发明后，航空测绘便诞生了。
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"We can see these platforms being used for a range of research projects which involve aerial photography, mapping, or the monitoring of our weather systems," says Mr Bennett.
The 3d-maps will be generated by the system Rapid 3d Mapping, developed by Saab ab, which produces highly detailed and realistic 3d-models based on aerial images.