Introduction:
Photogrammetry is a method of surveying in which plans or maps are prepared from photographs taken from suitable camera stations. This is also known as photographic surveying.
Purpose of Photogrammetry:
- Preparation of topographic maps
- Preparation of composite pictures of the ground
- Soil classification
- Interpretation of geology
Types of Photogrammetry:
- Terrestrial or ground Photogrammetry
- Aerial Photogrammetry
Aerial Photogrammetry
The terms aerial Photogrammetry denotes that branch of Photogrammetry where in maps are prepared from photographs of the terrain in an area taken by a precision camera mounted in an aircraft flying over the area.
Aerial surveying is economical for quick rapid surveys of difficult and highly developed urban
areas.
Aerial surveying is used with great success for the following purposes:
- Reconnaissance and preliminary surveys
- Roads and Railways
- Water supply
- Power schemes and transmission lines
- Acquisition of land
- Town and village planning
- Flood control, irrigation, drainage and soil conservation
- Harbours, navigation channels and coastal defence
- Mining prospects
- Study of geology
- Soil and agricultural studies
- Military installations, camping and forbidden zones
Aerial photogrammetry consists of four operations,
- Flying
- Photography
- Ground control
- Compilation or mapping
Equipments required for these operations comprise:
- An aero plane
- A camera
- Accessories required for interpretation and plotting maps, like Zeiss stereoplatigraph, Zeiss aero-cartograph.
Function :
- Angle Measurement
- Distance Measurement
- Co-ordinate Measurement
- Advance Measurement
- Remote Elevation Measurement
- Setting Out Measurement
- Missin
Note: Total Station is the total land Surveying System.
Conclusion: Including Aquaculture engineering, Photogrammetry in Fish Industry as well as other sort of civil work too. Potentially good Photogrammetry indicates a better Fish Industry.
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