# Questions tagged [triangulation-survey]

Land surveying process, from former times, of measuring horizontal angles, and relatively few distances, among a network of control points and subsequent calculation of horizontal positions.

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### Seeking list of geodetic benchmark locations for all of Canada? [duplicate]

Does anyone know where I can find a list of geodetic benchmark locations for all of Canada? I am looking for a few specific control monuments in Arctic Canada with accurate coordinates
10k views

### How to get intersection point from two lines (two coordinated points and two bearings)

I have tried for ages to find the algorithm for getting the coordinate of two intersecting lines from two given coordinated (latitude and longitude) points. As the picture below suggests, I have two ...
77 views

### Trigonometry and calculating the elevation angle from aerial photography

I was wondering whether anybody could advise me on a way to calculate the elevation angle from a camera to an object in an aerial photograph taken from a known elevation with no suitable reference ...
56k views

### Differences between triangulation and trilateration?

Looking around I noticed that many people interchange the terms (triangulation and trilateration) for the same sense. What is the correct sense of Triangulation and what are the differences from ...
39 views

### 2D Curve to poly-lines transformation through triangulation?

I'd like to understand whether it is possible to change the curve in the picture to a sets of poly-lines through triangulation? and is it possible in QGIS? Otherwise, are there other methods to ...
938 views

### Triangulation: Estimate a location using lat/long coordinates and bearings

I would like to get an estimated location using lat/long coordinates and bearings at each of those coordinates using R. In this case I would be approximating the location of a turkey nest that I ...
553 views

### Bearing to X,Y, Z

I’m working on a small project where I’m testing the ability of a laser to accurately measure the angle of a wire. My control for the experiment gives me X,Y,Z coordinates for a point on the wire and ...
1k views

### Proper ground-to-grid correction and projection from old survey maps

I asked this question over on the ESRI geonet site, but haven't had any luck there, sorry for the duplication... I'm working on digitizing a group of maps from the 1950's that show locations of ...
875 views

### Python code to determine the position on a map using Geo-Tagging

What is a proper python code, which enables to scan photographs (when captured from a series of snapshots) and match it with a geo-tagged image database. Based on the extent of similarities existing ...