The measurement of landscape features and their positions.

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2answers
187 views

Reaching cm (inch) level elevation precision using drones

A road construction firm needs altitude data of road path before and after the construction and the error should be less than 3 cm (2 inch). Normally, they put a ground station and workers manually ...
3
votes
1answer
102 views

Can't generate true orthophoto from my software

I am a GIS specialist and a surveyor. Lately I'm trying to use as a surveying tool my DJI Phantom 3 pro combining with different software for generating DEM, DSM, 3d model and orthophoto. But I can't ...
2
votes
1answer
49 views

How to Decipher an SDR File

I want to create a custom import routine that can read/import an sdr file. The sdr files will contain information the surveyor has picked up when completing an as-built. The data will likely contain ...
0
votes
1answer
60 views

Water diving and depth measuring equipment

We go to villages and forest to deepwell rig for water. Can anyone help in identifying a GPS and water depth measurement devices please? we do 4-6" deepwell rigging for ground water in mozambique ...
3
votes
0answers
236 views

How to set up a base station without known coordinates

I am new to surveying, but need to set up a Topcon controller with Pocket 3-D to run 2 receivers and a grader running off the base receiver for my new job. It sounds stupid, because I can't seem to ...
2
votes
0answers
110 views

Software that converts from legal description text?

Is there software that takes legal description text as input for conversion to some computer friendly GIS format? For example: Those portions of the North Half of the Southeast Quarter and the ...
0
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0answers
138 views

What are the top 5 file types for 3D model?

I don't know much about GIS but I'm investigating a project that requires a 3D model of a hilly large town (town centre, suburbs, golfcourse, etc.). I'm not certain which file-type of these ...
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0answers
607 views

Exporting Leica Geo Office points to view/edit in ArcGIS for Desktop?

I've got some points recorded with a leica 1200 rover, which I now have imported into Leica Geo Office. I want to export these to view and edit them in ArcGIS for Desktop. I recorded their properties ...