All Questions
Tagged with accuracy coordinates
10 questions
0
votes
1
answer
34
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Improving point loaction accuracy after an RTK survey
I have recently collected the location of a number of points using RTK with base and rover GNSS recivers (Emlid RS2). My base station was not placed over a known point, meaning the base postion was ...
- 5
0
votes
0
answers
440
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How to calculate accuracy of a calculated (predicted) coordinate (latitude, longitude)?
Given GPS data that consists of:
Latitude
Longitude
Bearing (degrees)
Speed (meters per second)
Accuracy (radius of the circle around the coordinate where true position can be found with 68% chance, ...
- 101
7
votes
2
answers
441
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GPS glitch causes 200 m circles around stationary position- Has anyone seen this before?
I am working with GPS data from public transport buses in a city in the UK. The data have very characteristic circles of approx. 200 m diameter at bus stops. I suspect that these are caused by an ...
- 81
1
vote
0
answers
4k
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Accuracy of Google Maps geo-coordinates vs high precision GPS receiver
I need to know how accurate coordinates obtained from Google Maps/Earth are. Are they 'quasi absolutely' (I know there is no absolut location determination)?
In other words, if I record the ...
- 63
5
votes
3
answers
1k
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Surveys showing GPS accuracy in different models of smartphones?
Are there any surveys that give accuracy in meters for different smartphones (e.g, iPhone 6: 8 meters, Samsung Galaxy S8: 7 meters) regardless of what the statistical method is being used?
- 59
2
votes
1
answer
7k
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How to calculate RMSE of geographic coordinates?
I've been working on my project and I stumble upon how I can calculate the Root Mean Square Error (RMSE) of geographic coordinates.
What I have is a derived coordinates from processing LiDAR data ...
- 49
1
vote
1
answer
72
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Transfer from Android phone to Windows OS truncates lat long
I am clicking GPS enabled pictures of sites which are less than 500 metres apart through Android based Samsung ACE Duos phone. I later use Google Earth on my Laptop to view these geo tagged pictures. ...
- 11
3
votes
2
answers
133
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Compensating lat/long offsets after conversions
In my application I am doing conversions between two different formats of data.
First format is a simple one containing NE and SW coordinates for a given rectangular area:
area = {
"sw": {
...
- 33
1
vote
1
answer
1k
views
Calculating positional accuracy in QGIS?
How to you compare two layers in QGIS to get the positional accuracy?
612
votes
7
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591k
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Measuring accuracy of latitude and longitude
I have latitude and longitude as 19.0649070739746 and 73.1308670043945 respectively.
In this case, both coordinates are 13 decimal places long, but sometimes I also get coordinates that are 6 decimal ...
- 6,247