Questions tagged [ecef]

Use this tag when referring to ECEF - earth centered, earth fixed when using a geographic coodinate system.

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Can we say ECEF datum like in Geodetic datum?

Commonly we use geodetic datum to describe the geoid, a distorted ellipsoid model of the Earth, but is it correct to say Earth-Centered Earth-Fixed (ECEF) datum? Because we are applying ECEF to a ...
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1answer
166 views

Treating latitude/longitude as a pair of polar coordinates

I have latitude longitude coordinates covering the whole globe that I wish to perform arithmetic operations (mean, interpolation) on without concern for ambiguous points and wrap around and without ...
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1answer
992 views

Local ENU point of interest to ECEF

I have a local ENU coordinate system on the surface of the Earth (similar to this question: GPS coordinates to XYZ on relative grid). I know the lat,lon,alt of the local ENU origin, and thus I can ...
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205 views

ECEF to relative displacement in meters

I have GPS NMEA (National Marine Electronics Association) data that I collected being stationary and I can see the displacement of 4 meters just by looking at GPX data uploaded to google maps. I am ...
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2answers
1k views

Units for LLA to ECEF conversion

I wish to implement this formula from Wikipedia to convert LLA to ECEF coordinates: where and a and b are the semi-major and semi-minor axes respectively. My question is: what units will this ...
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1answer
616 views

Using local mean sea level (LMSL) as altitude for converting latitude longitude altitude to ECEF

I am new in Geographic area and would like to convert latitude and longitude coordinates into ECEF x,y coordinates so that I could do some linear calculation of line or circle equation. I was able to ...
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1answer
113 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 ...
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1answer
137 views

Parametric equation with latitude and longitude

I have an arc described by three points: arc center, starting point, ending point. In order to calculate intermediate points of the arc, I would normally use the parametrized equation. x(t) = x(...
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0answers
520 views

Using PROJ.4 to convert from 3D Cartesian ECEF coordinates to Lat/Long coordinates with inverse Icosahedral Snyder Equal Area (ISEA) projection

I have a set of X, Y, Z coordinates in the Earth Centered Earth Fixed (ECEF) geocentric system. I need to convert them from ECEF coordinates into Latitude/Longitude coordinates using an inverse ...
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0answers
209 views

Importing ECEF WGS84 into ArcGIS Desktop?

I have a file in ECEF WGS84 in meters. I want to import these points in ArcMap 10.5 as point layer. The file to import is in Excel format. I can import them with Excel to layer tool. I can see all ...
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1answer
353 views

How can I project earth centered cartesian coordinates (EPSG:4978) to lat lon within Geoserver?

I have a PostGIS database with X, Y, and Z ECEF coordinates and I want to create a layer in Geoserver that displays these coordinates as points in OpenLayers. In Geoserver's create layer page there is ...
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686 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) ...