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Equipment:
Photogrametrica station:
The digital fotogrametric stations mainly are composed by a computer type PC and a series of special devices, that allow to make the same functions of an analytical restituidor but in totally digital form. The geometric principles of coplanaridad of rays continue 
being effective for the directions but now through image algorithms to epipolar. The images are replaced on 
film (negative or positive) by digital archives of images to raster, for which it is necessary to have escáner fotogrametric of hi-res.
Units of GPS:
EFD counts on 3 units of GPS of mark TRIMBLE R3 model. The system of Trimble R3 GPS is complete a postprocessed solution GPS L1 of the leader of industry in technology that examines of the GPS. Combining a receiver and antenna of L1 GPS, rough regulator handheld, and software easy to use of the field and the office, the system of Trimble R3 brings exact control from subcentimeter to your site, it 
establishes new located control, and it gathers topographic data. The system works without line of sight between the points, and can work day or night at any time. The supplies of the system of Trimble R3 GPS:
A unique factor of the form that works as hardly as it Software beams familiar, easy to use in the field and office a solution that examines total for L1 GPS From the field to the office, each component of the system of Trimble R3 GPS works together
The system includes: A receiver of the examine-degree L1 GPS integrated with the popular regulator of Trimble Recon Software of the field of Digital Trimble Fieldbook Receiver of Trimble A3 L1 GPS Software of the office of the center of business of Trimble - module of the Postprocessing L1