All Questions
Tagged with coordinate-system ned
8 questions
1
vote
1
answer
1k
views
Choosing UTM to NED Conversion method?
I am having GPS and SFM (Structure for motion) trajectory in UTM coordinates. I wanted to convert the both trajectory to NED (North East Down).
Method 1
In First step: I converted the data from UTM -...
- 25
0
votes
0
answers
228
views
How can I project a raster DEM and not get serious distortion in the resulting DEM?
Please see this link to see a fine example of what I am dealing with.
Distortion in projected raster
My specific situation is that I have downloaded DEM data from the National Map (USA) and it comes ...
0
votes
1
answer
244
views
Using Tissot's Indicatrix Validate Conversion to ECEF
When using NED & ECEF as CRS:
https://www.mathworks.com/help/map/ref/ned2ecef.html?requestedDomain=true
Am I should worry from getting 'classical' projection issues?
For example when x,y are ...
- 1,809
1
vote
0
answers
2k
views
Perform Calculations in Cartesian Frame (NED/ECEF) Vs. Geodetic Frame
I'm recording robot's path (using INS) in Cartesian frame coordinates (x,y,z) relative to origin point. So essentially I've created NED coordinate system.
Origin point has exact (in advance measured) ...
- 1,809
1
vote
0
answers
2k
views
Convert locations from ECEF NED (local coordinate system) to WGS 84 (global coordinate system)
I track relative positions to known fixed reference location (Lat/Lon/Alt on WGS 84).
Which means Location_0 is the above reference location, and Location_i is something like (X,Y,Z) relative by ...
- 1,809
3
votes
1
answer
2k
views
NED (NAVD88) to WGS84 heights
I need to convert the 1/3 arc second DEM files from the NED into WGS84 ellipsoid heights. The documentation says that the NED is referenced to NAVD88. I've tried using gdalwarp as follows:
gdalwarp ...
- 181
5
votes
4
answers
13k
views
Does the NED use geocentric or geodetic latitude?
What kind of latitude does the National Elevation Dataset (NED) use? Geocentric or geodetic or something else? I can't find the information anywhere on their site (http://ned.usgs.gov/index.html) or ...
- 153
6
votes
1
answer
1k
views
Slope analysis from NED data gives crazy histogram? [duplicate]
I'm attempting a simple slope analysis in QGIS2 using the plugin at Raster -> Terrain Analysis -> Slope. The slope output layer has a very strange histogram, basically spikes at 0 and at 89.9098 with ...
- 935