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Questions tagged [ecef]

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

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LLA to ECEF, azimuth correction

When I'm working with latitude,longitude,altitude(LLA) the azimuth angle between two LLA points is due to true north. I have noticed that this azimuth angle is not the same azimuth angle when I ...
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1answer
51 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
325 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
206 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
65 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
87 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
388 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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153 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
247 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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425 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) ...