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。
2
The paper introduced the working principle and main parameters of Digital MappingCamera(DMC). It discussed the data characteristics of DMC digital aerial photograph.